Circulation. 2006;113:e85-e151
Published online before print January 11, 2006,
doi: 10.1161/CIRCULATIONAHA.105.171600
(Circulation. 2006;113:e85-e151.)
© 2006 American Heart Association, Inc.
Heart Disease and Stroke Statistics2006 Update
A Report From the American Heart Association Statistics Committee and Stroke Statistics Subcommittee
Writing Group: Thomas Thom;
Nancy Haase;
Wayne Rosamond, PhD;
Virginia J. Howard, MSPH, FAHA;
John Rumsfeld, MD, PhD, FAHA;
Teri Manolio, MD, PhD, FAHA;
Zhi-Jie Zheng, MD, PhD*;
Katherine Flegal, PhD*;
Christopher ODonnell, MD, MPH, FAHA;
Steven Kittner, MD;
Donald Lloyd-Jones, MD;
David C. Goff, Jr, MD, PhD, FAHA;
Yuling Hong, MD, MSC, PhD, FAHA;
Members of the Statistics Committee and Stroke Statistics Subcommittee**;
Robert Adams, MD;
Gary Friday, MD, MPH;
Karen Furie, MD, MPH;
Philip Gorelick, MD, MPH;
Brett Kissela, MD;
John Marler, MD;
James Meigs, MD;
Veronique Roger, MD;
Stephen Sidney, MD, MPH;
Paul Sorlie, PhD;
Julia Steinberger, MD, MSC;
Sylvia Wasserthiel-Smoller, PhD;
Matthew Wilson, MD;
Philip Wolf, MD
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Table of Contents
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- About These Statistics
- Cardiovascular Diseases
- Coronary Heart Disease, Acute Coronary Syndrome and Angina Pectoris
- Stroke and Stroke in Children
- High Blood Pressure (and End-Stage Renal Disease)
- Congenital Cardiovascular Defects
- Heart Failure
- Other Cardiovascular Diseases
- Arrhythmias (Disorders of Heart Rhythm)
- Arteries, Diseases of (including Peripheral Arterial Disease)
- Bacterial Endocarditis
- Cardiomyopathy
- Rheumatic Fever/Rheumatic Heart Disease
- Valvular Heart Disease
- Venous Thromboembolism
- Risk Factors
- Tobacco
- High Blood Cholesterol and Other Lipids
- Physical Inactivity
- Overweight and Obesity
- Diabetes Mellitus
- Metabolic Syndrome
- Nutrition
- Quality of Care
- Medical Procedures
- Economic Cost of Cardiovascular Diseases
- At-a-Glance Summary Tables
- Men and Cardiovascular Diseases
- Women and Cardiovascular Diseases
- Ethnic Groups and Cardiovascular Diseases
- Children, Youth and Cardiovascular Diseases
- Glossary and Abbreviation Guide
- Acknowledgment
- References
Appendix I: List of Statistical Fact Sheets. URL: http://www.americanheart.org/presenter.jhtml?identifier=2007
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1. About These Statistics
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The American Heart Association works with the Centers for Disease
Control and Preventions National Center for Health Statistics
(CDC/NCHS), the National Heart, Lung, and Blood Institute (NHLBI),
the National Institute of Neurological Disorders and Stroke
(NINDS), and other government agencies to derive the annual
statistics in this update. This section describes the most important
sources we use. For more details and an alphabetical list of
abbreviations, see the Glossary and Abbreviation Guide.
All statistics are for the most recent year available. Prevalence, mortality and hospitalizations are computed for 2003 unless otherwise noted. Mortality as an underlying or contributing cause of death is for 2002. Economic cost estimates are for 2006. Due to late release of data, some disease mortality are not updated to 2003. Mortality for 2003 are underlying preliminary data, obtained from the NCHS publication National Vital Statistics Report: Deaths: Preliminary Data for 2003 (NVSR, 2005;53:15) and from unpublished tabulations furnished by Robert Anderson of NCHS. US and state death rates and prevalence rates are age-adjusted per 100 000 population (unless otherwise specified) using the 2000 US standard for age standardization.
Morbidity (illness) and mortality (death) data in the United States use a standard classification systemthe International Classification of Diseases (ICD). About every 1020 years, the ICD codes are revised to reflect changes over time in medical technology, diagnosis or terminology. Effective with mortality data for 1999, were using the tenth revision (ICD/10). It will be a few more years before the tenth revision is used for hospital discharge data.
Prevalence
Prevalence is an estimate of how many people have a disease at a given point in time. Government agencies periodically conduct health examination surveys. Rates for specific diseases are calculated from those surveys. These rates are applied as the population changes for several years, until a new health examination survey is done and new rates are established. Its important to realize that the prevalence rates do not change from year to year until there is a new survey.
The annual changes in prevalence as reported in this update only reflect changes in the population. Its impossible to develop a prevalence "trend" by comparing numbers from yearly versions of this update or its precursors. Many of our prevalence estimates come from the NHANES studies of the CDC/NCHS, and the ARIC, CHS and FHS studies of the NHLBI. Coronary heart disease (CHD), myocardial infarction (MI), angina pectoris (AP) and stroke prevalence are based on self-reports in national health interviews.
Incidence
Incidence is an estimate of the number of new cases of a disease that develop in a population in a 1-year period. For some statistics, new and recurrent attacks or cases are combined.
The incidence of a specific cardiovascular disease (CVD) in the United States is estimated by multiplying the incidence rates reported in community- or hospital-based studies by the US population. The rates change only when new data are available; they are not computed annually. The estimates were revised to reflect the 2000 US Census. Do not compare the incidence or the rates with those in past issues of the Heart and Stroke Statistical Update (renamed Heart Disease and Stroke Statistics Update). Doing so can lead to serious misinterpretation of time trends.
Our incidence estimates for the various cardiovascular diseases are extrapolations from the Framingham Heart Study (FHS), Atherosclerosis Risk in Communities (ARIC) study and Cardiovascular Health Study (CHS) conducted by the NHLBI and Greater Cincinnati/Northern Kentucky Stroke Study and others conducted by the NIH.
Note: data published by governmental agencies for some racial groups, are considered unreliable due to the small sample size in the studies. Since we try to provide data for as many racial groups as possible, we show these data for informational and comparative purposes, etc.
If you have questions about statistics or any points made in this booklet, please contact the Biostatistics Program Coordinator at the American Heart Association National Center, nancy.haase@heart.org, 214-706-1423. Direct all media inquiries to News Media Relations at inquiries@heart.org or 214-706-1173.
We do our utmost to ensure that this update is error-free. If we discover errors after publication, well provide corrections at our Web site, http://www.americanheart.org/statistics.
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2. Cardiovascular Diseases
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(ICD/9 390459, 745747) (ICD/10 I00I99,
Q20Q28; see Glossary for details and definitions). See
Table 2A.
Prevalence
Of the 71 300 000 American adults with 1 or more types of cardiovascular disease (CVD), 27 400 000 are estimated to be age 65 or older (National Health and Nutrition Examination Survey [NHANES 19992002], CDC/NCHS). Bullet points below are from NHANES 19992002 unless otherwise noted.
The following are the latest estimates of prevalence for these conditions. Due to overlap, it is not possible to add these conditions to arrive at a total.
- High blood pressure (HBP)65 000 000. (Defined as systolic pressure 140 mm Hg or greater and/or diastolic pressure 90 mm Hg or greater, taking antihypertensive medication or being told at least twice by a physician or other health professional that you have high blood pressure.)
- Coronary heart disease (CHD)13 200 000.
- Myocardial infarction (MI, or heart attack)7 200 000.
- Angina pectoris (AP, or chest pain)6 500 000.
- Heart failure (HF)5 000 000.
- Stroke5 500 000.
- Congenital cardiovascular defects1 000 000 (Unpublished NHIS survey data, 199395, CDC/NCHS).
- 1 in 3 adult men and women has some form of CVD (NHANES 199902, CDC/NCHS).
- The following prevalence estimates are for people age 18 and older1:
- Among whites only, 11.4% have heart disease, 5.9% have CHD, 20.5% have hypertension and 2.3% have had a stroke.
- Among blacks or African Americans only, 9.9% have heart disease, 5.3% have CHD, 31.6% have hypertension and 3.5% have had a stroke.
- Among Hispanics or Latinos, 7.7% have heart disease, 4.5% have CHD, 19.0% have hypertension and 2.2% have had a stroke.
- Among Asians, 5.6% have heart disease, 3.8% have CHD, 16.1% have hypertension and 1.8% have had a stroke.
- Among Native Hawaiians or other Pacific Islanders, 16.6% have heart disease, 4.9% have CHD, and 18.2% have hypertension.
- Among American Indians or Alaska Natives, 13.8% have heart disease, 8.2% have CHD, 23.9% have hypertension and 3.1% have had a stroke.
Incidence
- Based on the NHLBIs Framingham Heart Study (FHS) in its 44-year follow-up of participants and the 20-year follow-up of their offspring2...
- The average annual rates of first major cardiovascular events rise from 7 per 1000 men at ages 3544 to 68 per 1000 at ages 8594. For women, comparable rates occur 10 years later in life. The gap narrows with advancing age.
- Under age 75, a higher proportion of CVD events due to CHD occur in men than in women, and a higher proportion of events due to congestive heart failure (CHF) occur in women than in men.
- Among American Indian men ages 4574, the incidence of CVD ranges from 15 to 28 per 1000. Among women it ranges from 9 to 15 per 1000.3
- Data from the FHS indicate that the lifetime risk for CVD is 2 in 3 for men and more than 1 in 2 for women at age 40 (personal communication, Donald Lloyd-Jones, MD).
Mortality
- Preliminary mortality data show that CVD as the underlying cause of death accounted for 37.3% of all 2 440 000 deaths in 2003 or 1 of every 2.7 deaths in the United States. CVD as an underlying or contributing cause of death (1 408 000 deaths in 2002) was about 58% of all deaths that year.
- Since 1900, CVD has been the No. 1 killer in the United States every year but 1918. Nearly 2500 Americans die of CVD each day, an average of 1 death every 35 seconds. CVD claims more lives each year than the next 4 leading causes of death combined, which are cancer, chronic lower respiratory diseases, accidents, and diabetes mellitus.
- The 2003 overall preliminary death rate from CVD was 308.8. The rates were 359.1 for white males and 479.6 for black males; 256.2 for white females and 354.8 for black females. From 19932003, death rates from CVD (ICD/10 I00I99) declined 22.1%. In the same 10-year period actual CVD deaths declined 4.6%.
- Other causes of death in 2003cancer 554 643; accidents 105 695; Alzheimers disease 63 343; HIV (AIDS) 13 544. (preliminary data)
- The 2003 preliminary CVD death rates were 364.2 for males and 262.5 for females. Cancer death rates were 232.3 for males and 160.2 for females. Breast cancer claimed the lives of 41 566 females in 2003; lung cancer claimed 67 894. Death rates for females were 25.2 for breast cancer and 41.1 for lung cancer. One in 30 female deaths are from breast cancer, while 1 in 2.6 are from CVD. Based on preliminary 2003 mortality, CVD caused about a death a minute among femalesover 480 000 female lives every year. Thats more female lives than were claimed by the next five leading causes of death combined (cancer, COPD, Alzheimers, diabetes and accidents).
- Over 152 000 Americans killed by CVD each year are under age 65. In 2002, 32% of deaths from CVD occurred prematurely (ie, before age 75, which is close to the average life expectancy).
- In 2002, the age-adjusted death rate for diseases of the heart in American Indians or Alaska Natives was 201.2 for males and 123.6 for females; for Asians or Pacific Islanders it was 169.8 for males and 108.1 for females; for Hispanics or Latinos it was 219.8 for males and 149.7 for females (Health, United States, 2004; CDC/NCHS).
- According to the CDC/NCHS, if all forms of major CVD were eliminated, life expectancy would rise by almost 7 years. If all forms of cancer were eliminated, the gain would be 3 years. According to the same study, the probability at birth of eventually dying from major CVD (I00I78) is 47%, and the chance of dying from cancer is 22%. Additional probabilities are 3% for accidents, 2% for diabetes and 0.7% for HIV.4
- Based on revised 2000 population data, the average life expectancy of people born in the United States in 2003 is 77.6 years (preliminary data for 2003. NSVR, Vol. 53, No. 15, Hyattsville, Md: National Center for Health Statistics, 2005).
- In 2001, the proportion of premature deaths (<65 years) from diseases of the heart (I00I09, I11, I13, I20I51) was greatest among American Indians or Alaska Natives (36%) and blacks (31.5%) and lowest among whites (14.7%). Premature death was higher for Hispanics (23.5%) than non-Hispanics (16.5%), and for males (24%) than females (10%). Hispanic whites (23.3%) had lower proportions than Hispanic blacks (27.5%), and non-Hispanic (NH) whites (14.4%) had lower proportions than NH blacks (31.5%).5
- Age-adjusted death rates for diseases of the heart from 199098 declined 17% for Hispanics, 15% for NH whites, 14% for Asians/Pacific Islanders, 11% for NH blacks, and 8% for American Indians or Alaska Natives. In 1998 the rate for NH blacks was 2.8 times the rate for Asian or Pacific Islanders.6
Out-of-Hospital Cardiac Arrest
There is a wide variation in the reported incidence and outcome for out-of-hospital cardiac arrest. These differences are due to in part to differences in definition and ascertainment of cardiac arrest, as well as differences in treatment after its onset.
Cardiac arrest is the cessation of cardiac mechanical activity as confirmed by the absence of signs of circulation.6a Available epidemiological databases do not record deaths due to cardiac arrest or the subset of cases that occur with sudden onset (sudden cardiac arrest). Therefore, surrogate data are often used for epidemiological purposes to estimate the incidence of cardiac arrest, especially in the out-of-hospital setting. Those surrogate data include deaths due to "coronary heart disease" (ICD codes I20-I25) and "cardiac arrest," defined as coronary death that occurred within 1 hour of symptom onset in the out-of-hospital setting, and without other probable cause of death.6b Datasets based on either definition are not optimal. Out-of-hospital data that are based on the latter definition of cardiac arrest can be especially unreliable because of the difficulty in determining the duration of symptoms prior to the onset of the episode. The following information summarizes representative data from several sources in an attempt to characterize the incidence and outcome of sudden cardiac arrest and demonstrate the need for a comprehensive system of capturing more meaningful data.
- 330 000 coronary heart disease deaths occur out-of-hospital or in hospital emergency departments annually (2002) (ICD-10 codes I20-I25) (personal communication, Thomas Thom, NHLBI/NIH).
- In 1998, 456 076 deaths from cardiac disease (ICD-9 code 390 to 398, 402, or 404 to 429) were reported in the United States (among people aged 35 years and above) in an emergency room, before reaching a hospital, or as "dead on arrival."7
- The annual incidence of sudden cardiac arrest in North America is about 0.55 per 1000 population.8,9 With an estimated US population of 296 766 821,10 this implies that about 163 221 out-of-hospital sudden cardiac arrests occur annually in the United States.
- About two thirds of unexpected cardiac deaths occur without prior recognition of cardiac disease.11
- About 60% of unexpected cardiac deaths are treated by EMS.12
- Incidence of EMS-treated out-of-hospital cardiac arrest is 36/100 00081/100 000.12,13 This implies EMS treats 107 000 to 240 000 cardiac arrests in the United States annually.
- Of these, 20%38% have ventricular fibrillation or ventricular tachycardia as the first recorded rhythm. This implies 21 00091 000 ventricular fibrillation arrests annually.8,13
- The incidence of ventricular fibrillation among cardiac arrest victims with any first initial rhythm is decreasing over time.13
- The median reported survival to discharge after any first recorded rhythm is 6.4%.14 Survival during a recent one year experience in Seattle of all treated cardiac arrests, considered to be of cardiac origin, was reported to be 20%. (personal communication, L. Cobb, Seattle Medic One, December 7, 2005).
- The average proportion of cases of out-of-hospital cardiac arrest that receive bystander CPR is 27.4%.14
- The incidence of lay responder defibrillation is low, 2.05% in 2002, but increasing over time.15
- Unexpected death in the pediatric patient is usually due to trauma, sudden infant death syndrome, respiratory causes or submersion.16 Ventricular fibrillation is an uncommon cause of cardiac arrest in children but it is observed in approximately 5% to 15% of children with out-of-hospital cardiac arrest.17
- The reported incidences of out-of-hospital pediatric cardiac arrest vary widely in number (from 2.619.7 annual cases per 100 000) and inclusion criteria (age, cause of arrest, etc).18
- Since there are 73 559 232 individuals aged <18 years in the United States,10 this implies that there are 1 90014 000 pediatric out-of-hospital cardiac arrests, annually, from all causes (including trauma, sudden infant death syndrome, respiratory causes, cardiovascular causes and submersion).
- The incidence of sudden cardiac arrest in children in the out-of-hospital setting is unknown. Studies that document voluntary reports of deaths among high school athletes suggest that the incidence of sudden cardiac arrest ranges from 0.281.0 deaths per 100 000 high school athletes annually nationwide.19,20 Although incomplete, these numbers provide a basis for estimating the number of deaths in this age range.
- The reported average survival to discharge after pediatric out-of-hospital cardiac arrest is 6.7%.18
Risk Factors
- Black and Mexican-American women have higher prevalence of CVD risk factors than white women of comparable socioeconomic status (SES).21
- Data from the 2003 BRFSS study of adults age 18 and older showed the prevalence of respondents reporting 2 or more risk factors for heart disease and stroke increased among successive age groups. The prevalence of having 2 or more risk factors was highest among blacks (48.7%) and American Indians/Alaska Natives (46.7%) and lowest among Asians (25.9%); prevalence was similar in women (36.4%) and men (37.8%). The prevalence of multiple risk factors ranged from 25.9% among college graduates to 52.5% among those with less than a high school diploma (or equivalent). Persons reporting household income of $50 000 or more had the lowest prevalence (28.8%) and those reporting $10 000 or less had the highest prevalence (52.5%). Adults who reported being unable to work had the highest prevalence (69.3%) of 2 or more risk factors, followed by retired persons (45.1%), unemployed adults (43.4%), homemakers (34.3%) and employed persons (34.0%). Prevalence of 2 or more risk factors varied by state/territory and ranged from 27.0% (Hawaii) to 46.2% (Kentucky). Twelve states and 2 territories had a multiple-risk-factor prevalence of 40% or more: Alabama, Arkansas, Georgia, Indiana, Kentucky, Louisiana, Mississippi, North Carolina, Ohio, Oklahoma, Tennessee, West Virginia, Guam and Puerto Rico.22
- Data from the BRFSS study of the CDC showed that young women and men, ages 1824, had poor health profiles and experienced adverse changes from 19902000. After adjustment for education and income, these young people had the highest prevalence of smoking (3436% current smokers among whites); the largest increases in smoking (1012% among whites and 9% among Hispanic women); large increases in obesity (49% increase in all groups). All groups had high levels of sedentary behavior (approximately 2030%) and low vegetable or fruit intake (approximately 3550%). In contrast, older Hispanics and older black men, ages 6574, showed some of the most positive changes. They had the largest decreases in smoking (Hispanic women), largest decreases in sedentary behavior (Hispanic women and black men), and largest increases in vegetable or fruit intake (Hispanic women and black men).23
- Data from the Chicago Heart Association Detection Project (196773, with an average follow-up of 31 years) showed that in younger women (ages 1839) with favorable levels for all 5 major risk factors (blood pressure, serum cholesterol, BMI, diabetes and smoking), future incidence of CHD and CVD is rare, and long-term and all-cause mortality are much lower compared with those who have unfavorable or elevated risk factor levels at young ages. Similar findings applied to men in this study.24,25
- Data from the BRFSS study of the CDC showed that in adults age 18 and over, disparities in CVD health were common in all risk factors examined. In men, the highest prevalence of obesity (29.7%) was found in Mexican Americans who had completed a high school education. Black women with or without a high school education had a high prevalence of obesity (48.4%). Hypertension prevalence was high among blacks (41.2%), regardless of sex or educational status. Hypercholesterolemia was high among white and Mexican-American men and white women in both groups of educational status. CHD and stroke were inversely related to education, income and poverty status. Hospitalization was greater in men for total heart disease and acute MI but greater in women for CHF and stroke. Among Medicare enrollees, CHF hospitalization was higher in blacks, Hispanics, and American Indians/Alaska Natives than among whites, and stroke hospitalization was highest in blacks. Hospitalizations for CHF and stroke were highest in the southeastern United States. Life expectancy remains higher in women than in men and higher in whites than blacks by about 5 years. CVD mortality at all ages tended to be highest in blacks.26
- In respondents ages 1874, data from the 2000 BRFSS study showed the prevalence of Healthy Lifestyle Characteristics (HLC) was as follows: nonsmoking, 76.0%; healthy weight, 40.1%; 5 fruits and vegetables per day, 23.3%; and regular physical activity, 22.2%. The overall prevalence of the healthy lifestyle indicator (ie, having all 4 HLCs) was only 3%, with little variation among subgroups.27
- Analysis of 5 cross-sectional, nationally representative surveys, from NHES 196062 to NHANES 19992000, showed that the prevalence of key risk factors, ie, high cholesterol, high blood pressure, current smoking, and total diabetes, decreased over time across all BMI groups, with the greatest reductions observed among overweight and obese groups. Total diabetes prevalence was stable within BMI groups over time. However, the trend has leveled off or been reversed for some of the risk factors in more recent years.28
- The aging of the population will undoubtedly result in an increased incidence of chronic diseases, including coronary artery disease, heart failure and stroke.29
- The US Census estimates that there will be 40 million Americans age 65 and older in 2010.
- Theres been an explosive increase in the prevalence of obesity and type 2 diabetes. Their related complicationshypertension, hyperlipidemia and atherosclerotic vascular diseasealso have increased.
- An alarming increase in unattended risk factors in the younger generations will continue to fuel the cardiovascular epidemic for years to come.
Hospital/Physician/Nursing Home Visits
- From 19792003, the number of discharges from short-stay hospitals with CVD as the first listed diagnosis increased 31%. In 2003, CVD ranked highest among all disease categories in hospital discharges.30
- In 2003, there were 70 681 000 physician office visits with a primary diagnosis of CVD.31
- In 2003, there were 4 497 000 visits to emergency departments with a primary diagnosis of CVD.32
- In 1999, 23% of nursing home residents age 65 or older had a primary diagnosis of CVD at admission. This was the highest disease category for these residents.33
- In 2002, there were 6 024 000 outpatient department visits with a primary diagnosis of CVD.34
Cost
- The estimated direct and indirect cost of CVD for 2006 is $403.1 billion.
- In 2001, $29.3 billion in program payments were made to Medicare beneficiaries discharged from short-stay hospitals with a principal diagnosis of cardiovascular disease. That was an average of $8 354 per discharge.35
- A study of the 1987 National Medicaid Expenditure Survey and the 2000 Medical Expenditure Panel Survey, Household Component, showed the 15 most costly medical conditions, and the estimated percent increase in total healthcare spending for each condition from 19872000. The following are some of the top 15 conditions, by order of rank, and their percentage impact on health care spending: heart disease (1) +8.06%; cancer (4) +5.36%; hypertension (5) +4.24%; cerebrovascular disease (7) +3.52%; diabetes (9) +2.37%; and kidney disease (15) +1.03%.36
Operations and Procedures
- In 2003, an estimated 6 821 000 inpatient cardiovascular operations and procedures were performed in the United States; 3.9 million were performed on males and 2.9 million were performed on females.
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CHART 2S. 2002 Age-Adjusted Death Rates for Total Cardiovascular Disease, Coronary Heart Disease and Stroke by State (includes District of Columbia and Puerto Rico)
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3. Coronary Heart Disease, Acute Coronary Syndrome and Angina Pectoris
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Coronary Heart Disease
(ICD/9 410414, 429.2) (ICD/10 I20I25; see Glossary
for details and definitions). See
Table 3A.
Prevalence
- Among Americans ages 4074, NHANES data found the age-adjusted prevalence of self-reported MI and ECG-MI (verified by electrocardiogram) to be higher among men than women, but angina prevalence to be higher in women than men. Age-adjusted rates of self-reported MI increased among African-American men and women and Mexican-American men, but decreased among white men and women.38
Incidence
- This year an estimated 700 000 Americans will have a new coronary attack and about 500 000 will have a recurrent attack.39 It is estimated that an additional 175 000 silent first heart attacks occur each year.
- The estimated incidence of MI (ICD/9 410) (ICD/10 I21, I22) is 565 000 new attacks and 300 000 recurrent attacks annually.39
- The average age of a person having a first heart attack is 65.8 for men and 70.4 for women (ARIC and CHS, NHLBI).
- Based on the NHLBIs FHS in its 44-year follow-up of participants and the 20-year follow-up of their offspring2:
- CHD comprises more than half of all cardiovascular events in men and women under age 75.
- The lifetime risk of developing CHD after age 40 is 49% for men and 32% for women.40
- The incidence of CHD in women lags behind men by 10 years for total CHD and by 20 years for more serious clinical events such as MI and sudden death.
- In the NHLBIs ARIC study, average age-adjusted CHD incidence rates per 1000 person-years were: white men, 12.5; black men, 10.6; white women, 4.0; and black women, 5.1. Incidence rates excluding revascularization procedures were: white men, 7.9; black men, 9.2; white women, 2.9; and black women, 4.9. Hypertension was a particularly powerful risk factor for CHD in black persons, especially in black women. Diabetes was a weaker predictor of CHD in black than in white persons.41
- The annual rates per 1000 population of first heart attack (MI or CHD death) in non-black men are 19.2 for ages 6574, 28.3 for ages 7584, and 50.6 for age 85 and older. For non-black women in the same age groups the rates are 6.8, 14.2 and 33.2, respectively. For black men the rates are 21.6, 27.9 and 57.1, and for black women the rates are 8.6, 17.6 and 24.8, respectively (CHS [19892000], NHLBI).
- Combining the rates for possible and definite CHD shows that 17 to 25 of every 100 American Indian men ages 4574 had some evidence of heart disease.3
- Among American Indians ages 6574, the annual rates per 1000 population of new and recurrent heart attacks are 7.6 for men and 4.9 for women (SHS [1989-2002], NHLBI).
- CHD rates in women after menopause are 23 times those of women the same age before menopause.42
Mortality
CHD caused 1 of every 5 deaths in the United States in 2003. CHD mortality as an underlying or contributing cause of death653 000. MI mortality as an underlying or contributing cause of death221 000.
- CHD is the single largest killer of American males and females. About every 26 seconds an American will suffer a coronary event, and about every minute someone will die from one. About 40% of the people who experience a coronary attack in a given year will die from it.
- A study of 1275 HMO enrollees ages 5079 who had cardiac arrest (CA), showed the incidence of out-of-hospital CA was 6.0/1000 subject-years in subjects with any clinically recognized heart disease compared to 0.8/1000 subject-years in subjects without heart disease. In subgroups with heart disease, incidence was 13.6/1000 subject-years in subjects with prior MI and 21.9/1000 subject-years in subjects with heart failure.43
- An analysis of data from the FHS from 195099 showed that overall CHD death rates decreased by 59%. Nonsudden CHD death decreased by 64%, and sudden cardiac death fell by 49%. These trends were seen in men and women, in subjects with and without a prior history of CHD, and in smokers and nonsmokers.44
- From 19932003, the death rate from CHD declined 30.2%, but the actual number of deaths declined only 14.7%. In 2003, the overall CHD death rate was 162.6 per 100 000 population. The death rates were 209.2 for white males and 241.1 for black males; for white females the rate was 125.1 and for black females it was 160.3. The 2002 death rates for CHD were 138.3 for Hispanics or Latinos, 114.0 for American Indians or Alaska Natives, and 98.6 for Asians or Pacific Islanders (Health, United States, 2004).
- Over 83% of people who die of CHD are age 65 or older (CDC/NCHS).
- The estimated average number of years of life lost due to a heart attack is 14.2 (NHLBI).
- Based on data from the FHS study of the NHLBI2:
- 25% of men and 38% of women will die within 1 year after having an initial recognized MI. In part because women have heart attacks at older ages than men do, theyre more likely to die from them within a few weeks. Almost half of men and women under age 65 who have a heart attack (MI) die within 8 years.
- 50% of men and 64% of women who died suddenly of CHD had no previous symptoms of this disease.
- Between 70% and 89% of sudden cardiac deaths occur in men, and the annual incidence is 34 times higher in men than in women. However, this disparity decreases with advancing age.
- People whove had a heart attack have a sudden death rate thats 46 times that of the general population.
- Sudden cardiac death accounts for 19% of sudden deaths in children between 1 and 13 years of age and 30% between 14 and 21 years of age. The overall incidence is low, 600 cases per year.
- According to data from the National Registry of Myocardial Infarction45:
- From 19901999, in-hospital AMI mortality declined from 11.2% to 9.4%.46
- Mortality increases for every 30 minutes that elapse before a patient with ST-segment elevation is recognized and treated.47
- The median door-to-drug time for thrombolytic therapy was reduced by nearly half, from 61.8 minutes to 37.8 minutes, during the NRMI data collection used in this study. However, many hospitals are still working to meet the goal of 30 minutes set in 1991 (www.nrmi.org).
- Women under 50 are twice as likely to die after an AMI than men in the same age group.48
Risk Factors
- A study of men and women in 3 prospective cohort studies found that antecedent major CHD risk factor exposures were very common among those who developed CHD. About 90% of the CHD patients have prior exposure to at least 1 of these major risk factors, which include high total blood cholesterol levels or current medication with cholesterol-lowering drugs, hypertension or current medication with blood pressure-lowering drugs, current cigarette use, and clinical report of diabetes.49
- According to a case-control study of 52 countries (INTERHEART), 9 easily measured and potentially modifiable risk factors account for over 90% of the risk of an initial acute MI. The effect of these risk factors is consistent in men and women, across different geographic regions, and by ethnic group, making the study applicable worldwide. These 9 risk factors include cigarette smoking, abnormal blood lipid levels, hypertension, diabetes, abdominal obesity, a lack of physical activity, low daily fruit and vegetable consumption, alcohol overconsumption, and psychosocial index.50
- A study of over 3000 members of the FHS offspring cohort without CHD showed that among men with 10-year predicted risk for CHD of 20%, both failure to reach target heart rate and ST-segment depression more than doubled the risk of an event, and each MET (metabolic equivalent) increment in exercise capacity reduced risk by 13%.51
- Low CHD risk is defined as blood pressure <120/80 mm Hg, cholesterol <200 mg/dL and not currently smoking. Age-adjusted prevalence was estimated in nondiabetic persons without a history of MI participating in 4 NHANES surveys conducted in 197175, 197680, 198894, and 19992000.52
- The prevalence of low risk rose from 6% in 197175 to 17% in 198894 and 19992000.
- Prevalence of low risk was about twice as high in women as in men throughout the period.
- Prevalence was initially higher in whites than in blacks (7% versus 3% in 197175); it increased more with time in blacks (17% versus 15% in 19992000).
- Prevalence of low risk in 19992000 was lowest in those ages 6574 (3%) and was progressively greater at younger ages (29% at ages 2534), with similar increases in prevalence over time across age groups.
- The greatest changes in the components of low risk from 19712000 were in prevalence of favorable diastolic blood pressure (from 38% to 71%), compared to favorable systolic blood pressure (from 32% to 47%), nonsmoking (from 60% to 79%), and favorable cholesterol (from 33% to 46%).
- Taking into account CHD risk factors in combination provides a very potent predictor of 10-year risk of CHD compared with individual risk factors. Among participants ages 2079 in the NHANES III study of the CDC/NCHS, without self-reported CHD, stroke, peripheral vascular disease and diabetes, 81.7% had a 10-year risk for CHD of <10%, 15.5% had a risk of 1020%, and 2.9% had a risk of >20%. Among participants age 60 and over, 40.3% of men and 8.2% of women were at "intermediate risk (10% to 20%)." The proportion of participants with a 10-year risk of CHD of >20% increased with advancing age and was higher among men than women but varied little with race or ethnicity.53
- A study of NH white persons, ages 3574, in the Framingham Heart Study and the NHANES III studies, showed that 26% of men and 41% of women had at least 1 borderline risk factor in NHANES III. It is estimated that more than 90% of CHD events will occur in individuals with at least 1 elevated risk factor, and approximately 8% will occur in people with only borderline levels of multiple risk factors. Absolute 10-year CHD risk exceeded 10% in men older than age 45 who had 1 elevated risk factor and 4 more borderline risk factors and in those who had at least 2 elevated risk factors. In women, absolute CHD risk exceeded 10% only in those over age 55 who had at least 3 elevated risk factors.54
Aftermath
- Depending on their gender and clinical outcome, people who survive the acute stage of a heart attack have a chance of illness and death thats 1.515 times higher than that of the general population. The risk of another heart attack, sudden death, AP, HF and strokefor both men and womenis substantial (FHS, NHLBI).2
- A study conducted by the Mayo Clinic found that cardiac rehabilitation after a heart attack is underused, particularly in women and the elderly. Women were 55% less likely than men to participate in cardiac rehabilitation, and older study patients were less likely than younger participants. Only 32% of men and women age 70 or older participated in cardiac rehabilitation, in comparison to 66% of 60 69-year-olds and 81% of those under age 60.55
- Within 6 years after a recognized heart attack (MI) (FHS, NHLBI)2...
- 18% of men and 35% of women will have another heart attack.
- 7% of men and 6% of women will experience sudden death.
- About 22% of men and 46% of women will be disabled with heart failure.
- 8% of men and 11% of women will have a stroke.
Hospital Discharges
- From 19792003, the number of discharges from short-stay hospitals with CHD as the first listed diagnosis increased 16% (National Hospital Discharge Survey, CDC/NCHS).
- From 199099, the median duration of hospital stay related to acute myocardial infarction dropped from 8.3 days to 4.3 days, according to an analysis of the NRMI. Findings were similar for both patients receiving primary PTCA and those receiving thrombolytic therapy.46
- Data from Ambulatory Care Visits to Physician Offices, Hospital Outpatient Departments, and Emergency Departments: US, 19992000, showed the number of visits for CHD were 12.2 million.56
Awareness of Warning Signs and Risk Factors for Heart Disease
- Surveys conducted by the AHA between 1997 and 2003 showed the awareness of heart disease as the leading cause of death in women rose from 30% in 1997 to 46% in 2003. Awareness in white women (55%) was nearly twice as high as among African-American (30%) and Hispanic (27%) women.57
- In 2003, 46% of respondents to a nationally representative telephone survey of women age 25 and older, identified heart disease as the leading killer of women, up from 30% in 1997 and 34% in 2000.57
- In 1997, a telephone survey of 1000 US households found that only 8% of women respondents identified heart disease as their greatest health concern; less than 33% identified heart disease as the leading cause of death.58
- Data from the Women Veteran Cohort, age 35 and over, showed 42% of women were concerned about heart disease. Only 820% were aware that coronary artery disease (CAD) is the major cause of death for women.59
- Data from the 2001 BRFSS study of the CDC showed that 95% of respondents recognized chest pain as a heart attack symptom. However, only 11% correctly classified all symptoms and knew to call 911 when someone was having a heart attack. This random digit-dialed telephone survey was conducted in 17 states and the US Virgin Islands.60
- A study of public knowledge of CVD risk factors and risk-reduction techniques in 2 New England communities showed that prevention knowledge improved significantly over time in both locations and in every demographic subgroup. Scores were higher for native-born citizens, women, more educated individuals and English-speaking people. There was an increase in the identification of physical inactivity, and blood cholesterol/high-fat diet as CVD risk factors, while there was a decrease in the identification of overweight and blood pressure.61
- Three population-based cross-sectional surveys in 2 northern California cities were conducted between 1980 and 1990. Significant differentials in baseline knowledge widened over the 10-year period. Individuals with less than 12 years of education had only slight improvement in their knowledge of CVD risk factors; those with more than 16 years of education had twice as much improvement. There were similar time-effect disparities in knowledge of risk-reduction strategies. In contrast, interest in risk modification was high for all educational groups and remained uniform across time.62
- A national study of physician awareness and adherence to CVD prevention guidelines, conducted in late 2004, showed that fewer than 1 in 5 physicians knew that more women than men die each year from CVD.63
- A recent community surveillance study in 4 US communities reported that in 2000, the overall proportion of persons with delays from onset of symptoms of acute MI to hospital arrival of 4 or more hours was 49.5%. The study also reported that there was no statistically significant change in the proportion of patients delaying 4 or more hours from 19872000, indicating that there has been little improvement in the speed at which patients with MI symptoms arrive at the hospital after onset. Although the proportion of MI patients who arrived at the hospital by emergency medical services increased over this period from 37% in 1987 to 55% in 2000, the total time between onset and hospital arrival did not change appreciably.64
Cost
- In 2006, the estimated direct and indirect cost of CHD is $142.5 billion.
- In 2001, $11.6 billion was paid to Medicare beneficiaries for CHD ($11 201 per discharge for acute MI; $11 308 per discharge for coronary atherosclerosis; and $3513 per discharge for other ischemic heart disease).35
Operations and Procedures
- In 2003, an estimated 1 244 000 inpatient angioplasty procedures, 467 000 inpatient bypass procedures, 1 414 000 inpatient diagnostic cardiac catheterizations, 64 000 inpatient implantable defibrillators and 197 000 inpatient pacemaker procedures were performed in the United States.
Acute Coronary Syndrome (ACS)
(ICD/9 codes 410, 411)
The term "acute coronary syndrome" (ACS) is increasingly used to describe patients who present with either acute MI or UA. (UA is chest pain or discomfort thats unexpected and usually occurs while at rest. The discomfort may be more severe and prolonged than typical angina or be the first time a person has angina.)
- A conservative estimate for the number of discharges with ACS from hospitals in 2003 is 879 000. Of these, an estimated 497 000 are male and 382 000 are female. This estimate is derived by adding the first listed hospital discharges for myocardial infarction (767 000) to those for unstable angina (112 000) (CDC/NCHS).
- When including secondary discharge diagnoses, the corresponding number of hospital discharges was 1 555 000 unique hospitalizations for ACS, 946 000 for MI, and 650 000 for UA (31 000 hospitalizations received both diagnoses) (CDC/NCHS).
Decisions regarding medical and interventional treatments are based on specific findings noted when a patient presents with ACS. Such patients are classified clinically into 1 of 3 categories according to the presence or absence of ST segment elevation on the presenting electrocardiogram and abnormal ("positive") elevations of myocardial biomarkers such as troponins, as follows:
- ST elevation myocardial infarction (STEMI)
- non-ST elevation myocardial infarction
- unstable angina
Studies evaluating the percentage of ACS patients who have STEMI range from 3045%.65 These are only preliminary estimates, in part because of dramatically changing practices in the unstable angina discharge diagnosis in the past decade. Factors affecting the UA diagnosis include changes in reimbursement policies, the advent of more sensitive assays for myocardial injury (leading to increased diagnosis of MI over UA), and greater care of patients in same-day "chest pain units" and same-day catheterization procedures.
- A study of over 1300 elderly patients admitted to all intensive cardiovascular care units (CCUs) and cardiology departments in Israel, showed the mean age of women versus men was comparable. Comorbidities were more frequent in women, whereas previous coronary disease and typical anginal pain on admission were more frequent in men. Medical treatment and revascularization procedures during the index hospitalization were comparable. Crude and covariate-adjusted mortality rates were higher in women at 7 days, but not at 6 months. This difference was attributed to ST elevation (STE)-ACS in women versus men. Seven-day mortality rates were higher in patients with STE-ACS who were denied coronary angiography, especially women.66
Angina Pectoris
(ICD/9 413) (ICD/10 I20). See Table 3B.
Prevalence
- A study of 4 national cross-sectional health examination studies found that, among Americans ages 4074, the age-adjusted prevalence of AP was higher among women than men. Increases in the prevalence of AP occurred for Mexican-American men and women, and African-American women, but were not statistically significant for the latter.38
Incidence
- Only 20% of coronary attacks are preceded by long-standing angina.2
- The annual rates per 1000 population of new and recurrent episodes of angina for non-black men are 44.3 for ages 6574, 56.4 for ages 7584, and 42.6 for age 85 and older. For non-black women in the same age groups the rates are 18.8, 30.8 and 19.8, respectively. For black men the rates are 26.1, 52.2 and 43.5, and for black women the rates are 29.4, 37.7 and 15.2, respectively (CHS, NHLBI).
Mortality
A small number of deaths due to CHD are coded as being from AP. These are included as a portion of total deaths from CHD.
|
4. Stroke
|
---|
(ICD/9 430438) (ICD/10 I60I69). See
Table 4A.
68
Prevalence
- From the early 1970s to the early 1990s, the estimated number of noninstitutionalized stroke survivors increased from 1.5 million to 2.4 million.69
- The prevalence of stroke in American Indian men ages 4574 ranges from 0.21.4% and in women from 0.20.7%.3
- 19992003 data from the NHIS study of the CDC/NCHS showed that 3.6% of American Indians/Alaska Natives, age 18 and over, have had a stroke. Among blacks or African Americans it was 3.3%, among whites it was 2.2%, and among Asians it was 2.0%.70
- 2003 data from the BRFSS survey of the CDC showed a higher prevalence of stroke in 10 southeastern states than in 13 non-southeastern states and the District of Columbia. Prevalence was higher in blacks than in whites. The highest age-adjusted prevalence of stroke was among southeastern blacks, followed by non-southeastern blacks, southeastern whites and non-southeastern whites.71
- The prevalence of silent cerebral infarction between ages 5564 is about 11%. This prevalence increases to 22% between ages 65 and 69, 28% between ages 70 and 74, 32% between ages 75 and 79, 40% between ages 80 and 85, and 43% above age 85. Applying these rates to 1998 US population estimates results in an estimated 13 million people with prevalent silent stroke.71a,71b
Transient Ischemic Attack (TIA)
- The prevalence of transient ischemic attacks (TIA) in men is 2.7% for ages 6569 and 3.6% for ages 7579. (A TIA, or transient ischemic attack, is a mini-stroke that lasts less than 24 hours.) For women, TIA prevalence is 1.6% for ages 6569 and 4.1% for ages 7579.72
- Approximately 15% of all strokes are heralded by a TIA.73
- A third of spells characterized as TIAs using the classic definition (focal neurological deficits resolving within 24 hours) would be considered infarctions based on diffusion- weighted MRI findings.74
- In population-based studies, the age and gender adjusted incidence rates for TIA range from 68.283/100 000. Males and blacks have higher rates of TIA.75,76 Approximately half of patients who experience a TIA fail to report it to their healthcare providers.77,78
- After TIA, the 90-day risk of stroke is 317.3%, highest within the first 30 days.7577,79,80
- Within a year of TIA, up to a quarter of patients will die.76,81
- Individuals who have a TIA have a 10-year stroke risk of 18.8%, and a combined 10-year stroke, MI or vascular death risk of 42.8% (4% a year).82
- In the North American Symptomatic Carotid Endarterectomy Trial (NASCET) study, patients with a first-ever hemispheric TIA had a 90-day stroke risk of 20.1%. The risk of stroke after TIA exceeded the risk after hemispheric stroke.83
Incidence
- Each year about 700 000 people experience a new or recurrent stroke. About 500 000 of these are first attacks, and 200 000 are recurrent attacks (GCNKSS, FHS, ARIC).
- On average, every 45 seconds someone in the United States has a stroke.
- Each year, about 46 000 more women than men have a stroke (GCNKSS).
- Mens stroke incidence rates are 1.25 times greater than womens. The difference in incidence rates between the sexes is somewhat higher at younger ages but nonexistent at older ages. The male/female incidence was 1.59 for ages 6569; 1.46 for ages 7074; 1.35 for ages 7579 and 0.74 for age 80 and older (CHS, NHLBI).
- Of all strokes, 88% are ischemic, 9% are intracerebral hemorrhage, and 3% are subarachnoid hemorrhage (GCNKSS, FHS, ARIC).
- Blacks have almost twice the risk of first-ever stroke compared with whites. The age-adjusted stroke incidence rates (per 100 000) for first-ever strokes are 167 for white males, 138 for white females, 323 for black males and 260 for black females (GCNKSS, FHS, ARIC).
- The Brain Attack Surveillance in Corpus Christi project (BASIC) clearly demonstrated an increased incidence of stroke among Mexican Americans compared with NH whites in this community. The crude cumulative incidence was 168/10 000 in Mexican Americans and 136/10 000 in NH whites. Specifically, Mexican Americans have an increased incidence of intracerebral hemorrhage and subarachnoid hemorrhage compared with NH whites adjusted for age, as well as an increased incidence of ischemic stroke and TIA at younger ages when compared with NH whites.86
- The age-adjusted annual incidence rate (per 1000) for total stroke in Japanese-American men has declined markedly from 5.1 to 2.4; for thromboembolic stroke, from 3.5 to 1.9; and for hemorrhagic stroke, from 1.1 to 0.6. The estimated average annual declines are 5% for total stroke, 3.5% for thromboembolic stroke, and 4.3% for hemorrhagic stroke. The decline in stroke mortality in the Honolulu Heart Program (HHP) target population was similar to that reported for US white males ages 6069 during the same period (during the 196988 follow-up period of the HHP, NHLBI).
- Among American Indians ages 6574, the annual rates per 1000 population of new and recurrent strokes are 6.1 for men and 6.6 for women (SHS [19892002], NHLBI).
- Data from the Northern Manhattan Study showed the age-adjusted incidence of first ischemic stroke per 100 000 was 88 in whites, 149 in Hispanics and 191 in blacks. Among blacks compared with whites, the relative rate of intracranial atherosclerotic stroke was 5.85; extracranial atherosclerotic stroke, 3.18; lacunar stroke, 3.09; and cardioembolic stroke, 1.58. Among Hispanics compared with whites, the relative rate of intracranial atherosclerotic stroke was 5.00; extracranial atherosclerotic stroke, 1.71; lacunar stroke, 2.32; and cardioembolic stroke, 1.42.87
Mortality
Stroke accounted for about 1 of every 15 deaths in the United States in 2003. About 50% of these deaths occurred out of hospital. Stroke as an underlying or contributing cause of deathabout 273 000.
- When considered separately from other cardiovascular diseases, stroke ranks No. 3 among all causes of death, behind diseases of the heart and cancer (CDC/NCHS).
- On average, about every 3 minutes someone dies of a stroke.
- Eight to 12% of ischemic strokes and 3738% of hemorrhagic strokes result in death within 30 days.88
- From 19932003, the stroke death rate fell 18.5%, and the actual number of stroke deaths declined 0.7% (CDC/NCHS).
- The 2003 overall death rate for stroke was 54.3. Death rates were 51.9 for white males and 78.8 for black males; for white females it was 50.5 and for black females it was 69.1.
- 2002 age-adjusted death rates for stroke were 44.3 for Hispanic or Latino males and 38.6 for females; 50.8 for Asian or Pacific Islander males and 45.4 for females; and 37.1 for American Indians or Alaska Native males and 38.0 for females (Health, United States, 2004, CDC/NCHS).
- Because women live longer than men, more women than men die of stroke each year. Women accounted for 61.0% of US stroke deaths in 2003.
- From 199598, age-standardized mortality rates for ischemic stroke, subarachnoid hemorrhage and intracerebral hemorrhage were higher among blacks than whites. Death rates from intracerebral hemorrhage were also higher among Asian or Pacific Islanders than among whites. All minority populations had higher death rates from subarachnoid hemorrhage than did whites. Among adults ages 2544, blacks and American Indians or Alaska Natives had higher risk ratios than did whites for all 3 stroke subtypes.90
- In 2002, the mean age of stroke death was 79.6 years; however, males had a younger mean age at stroke death than females. Blacks, American Indians/Alaska Natives, and Asians/ Pacific Islanders had younger mean ages than whites, and the mean age at stroke death was also younger among Hispanics than non-Hispanics.85
Risk Factors
- TIAs carry a substantial short-term risk of stroke, hospitalization for cardiovascular events and death. Of 1707 TIA patients evaluated in the emergency department (ED) of a large health care plan, 180 patients, or 10%, developed stroke within 90 days. Ninety-one patients, or 5%, did so within 2 days. Predictors of stroke: more than 60 years of age, having diabetes mellitus, focal symptoms of weakness or speech impairment, and TIA lasting longer than 10 minutes.91
- The relative risk (RR) of stroke in heavy smokers (more than 40 cigarettes a day) is twice that of light smokers (less than 10 cigarettes per day). Stroke risk decreases significantly after 2 years and is at the level of nonsmokers by 5 years after cessation of cigarette smoking.92
- Atrial fibrillation (AF) is an independent risk factor for stroke, increasing risk about 5-fold. For details, see Section VII a: Arrhythmias.93
- In adults over 55, the lifetime risk for stroke is greater than 1 in 6. Women have a higher risk than men, perhaps due to their survival advantage. Blood pressure (BP) is a powerful determinant of stroke risk. Subjects with BP less than 120/80 mm Hg have about half the lifetime risk of stroke, compared to subjects with hypertension.94
- Data from the GCNKSS study shows that ischemic stroke patients with diabetes are younger, more likely to be African American, and more likely to have hypertension, MI, and high cholesterol than nondiabetic patients. Age-specific incidence rates and rate ratios show that diabetes increases ischemic stroke incidence at all ages, but this risk is most prominent before age 55 in African Americans and before age 65 in whites. One-year case fatality rates after ischemic stroke are not different between those patients with and without diabetes.95
Physical Activity
- Physical activity reduces stroke risk. Results from the Physicians Health Study showed a lower stroke risk associated with vigorous exercise among men (RR of total stroke = 0.86 for exercise 5 times a week or more).96 The Harvard Alumni Study showed a decrease in total stroke risk in men who were highly physically active (RR = 0.82).97
- For women in the Nurses Health Study, RR for total stroke from the lowest to the highest physical activity levels were: 1.00, 0.98, 0.82, 0.74 and 0.66, respectively.98
- The Northern Manhattan Studywhich included whites, blacks and Hispanics, and men and women in an urban settingshowed a decrease in ischemic stroke risk associated with physical activity (PA) levels across all racial/ethnic and age groups, and for each gender (odds ratio = 0.37).99
- A follow-up of the ARIC cohort found that PA be it from sports, during leisure time, or at workwas related to reduced risk of ischemic stroke.100
Pregnancy and Stroke
- The BaltimoreWashington Cooperative Young Stroke Study found the risk of ischemic stroke or intracerebral hemorrhage during pregnancy and the first 6 weeks postpartum was 2.4 times greater than for nonpregnant women of similar age and race. The risk of ischemic stroke during pregnancy was not increased during pregnancy per se, but was increased 8.7-fold during the 6 weeks postpartum. Intracerebral hemorrhage showed a small RR of 2.5 during pregnancy, but increased dramatically to an RR of 28.3 in the 6 weeks postpartum. The excess risk of stroke (all types except subarachnoid hemorrhage) attributable to the combined pregnant/post-pregnant period was 8.1 per 100 000 pregnancies.101
- Using Swedish administrative data, it was found that ischemic stroke and intracerebral hemorrhage, including subarachnoid hemorrhage, are increased in association with pregnancy. Compared to the risk of stroke among women who were not pregnant or in early pregnancy (up to the first 27 gestational weeks), women in the peripartum (from 2 days before to 1 day after delivery), and the puerperium (from 2 days before to 6 complete weeks after delivery) periods were at increased risk for all 3 major stroke types. The 3 days surrounding delivery were the time of highest risk.102
- Data from the HHP found that in elderly Japanese men ages 7193, low concentrations of high-density lipoprotein (HDL) cholesterol were more likely to be associated with a future risk of thromboembolic stroke than were high concentrations.103
- In the US Nationwide Inpatient Sample from 200001, the rate of events per 100 000 pregnancies was 9.2 for ischemic stroke, 8.5 for intracerebral hemorrhage, 0.6 for cerebral venous thrombosis and 15.9 for the ill-defined category of pregnancy-related cerebrovascular events, or a total rate of 34.2/100 000, not including subarachnoid hemorrhage. The risk was increased in African Americans and among older women. Among women with these events, death during hospitalization occurred in 4.1%, and in 22% of survivors after discharge to a facility other than home.104
Postmenopausal Women
- Stroke is a major health issue for women, particularly for postmenopausal women, raising the question whether increased incidence is due to aging or to hormone status, and whether hormone therapy affects risk.105,106
- Among postmenopausal women who are generally healthy, the Womens Health Initiative primary prevention clinical trial among 16 608 women (95% of whom had no pre-existing CVD) found that estrogen plus progestin (PremPro) increased ischemic stroke risk by 44%, with no effect on hemorrhagic stroke. The excess risk was apparent in all age groups, in all categories of baseline stroke risk, and in women with and without hypertension, or prior history of CVD.107
- In the Womens Health Initiative trial of estrogen alone, among 10 739 women with hysterectomy, it was found that conjugate equine estrogen alone (Premarin) increased risk of stroke by 39%. The excess risk conferred by estrogen alone was 12 additional strokes per 10 000 person-years.108
- In postmenopausal women with known CHD, the Heart and Estrogen/progestin Replacement Study (HERS), a secondary CHD prevention trial, found that a combination of estrogen plus progestin (conjugated equine estrogen [0.625 mg] and medroxyprogesterone acetate [2.5 mg] hormone therapy did not reduce stroke risk.109
- The Womens Estrogen for Stroke Trial (WEST) found that estrogen alone (1 mg of 17B-estradiol) in women of mean age 71 years, also had no significant overall effect on recurrent stroke or fatality, but there was an increased rate of fatal stroke and an early rise in overall stroke rate in the first 6 months.110
- Clinical trials data indicate that estrogen plus progestin as well as estrogen alone increase stroke risk in postmenopausal, generally healthy women and provide no protection for women with established heart disease.107,108,111
Aftermath
- Stroke is a leading cause of serious, long-term disability in the United States.112
- The median time from stroke onset to arrival in an ER is between 3 and 6 hours, according to a study of at least 48 unique reports of prehospital delay time for patients with stroke, TIA or stroke-like symptoms. The study included data from 17 countries, including the United States. Improved clinical outcome at 3 months was seen for patients with acute ischemic stroke when intravenous thrombolytic treatment was started within 3 hours of the onset of symptoms.113
- In 1999, more than 1 100 000 American adults reported difficulty with functional limitations, activities of daily living, etc, resulting from stroke (MMWR, Vol 50, No 7, Feb 23, 2001, CDC).
- According to the NHLBIs FHS2...
- 14% of persons who survive a first stroke or TIA will have another one within 1 year.
- 22% of men and 25% of women who have an initial stroke die within a year. This percentage is higher among people age 65 and older.
- 51% of men and 53% of women under age 65 who have a stroke die within 8 years.
- The length of time to recover from a stroke depends on its severity. From 5070% of stroke survivors regain functional independence, but 1530% are permanently disabled, and 20% require institutional care at 3 months after onset.
- In the NHLBIs FHS, among ischemic stroke survivors who were at least 65 years old, these disabilities were observed at 6 months post-stroke114:
- 50% had some hemiparesis.
- 30% were unable to walk without some assistance.
- 26% were dependent in activities of daily living.
- 19% had aphasia.
- 35% had depressive symptoms.
- 26% were institutionalized in a nursing home.
- Data from the Paul Coverdell National Acute Stroke Registry showed the majority of stroke admissions were ischemic strokes (5270%) with TIA and intracerebral hemorrhage comprising the bulk of the remainder. Between 19% and 26% of admissions were under 60 years of age, and between 52% and 58% were female. Blacks varied from 731% depending on state of residence. Between 20% and 25% of admissions arrived at the emergency department within 3 hours of onset. Treatment with recombinant tissue plasminogen activator (rtPA) was administered to between 3% and 8.5% of ischemic stroke admissions. Of those treated with rtPA, less than 20% received it within 60 minutes of arrival. Compliance with secondary prevention practices was poorest for smoking cessation counseling and best for antithrombotics.115
- Of patients with ischemic stroke in the California Acute Stroke Pilot Registry, 23.5% arrived at the ER within 3 hours of symptom onset, and 4.3% received thrombolysis. If all patients had called 911 immediately, the expected overall rate of thrombolytic treatment within 3 hours would have increased to 28.6%. If all patients with known onset had arrived within 1 hour and had been optimally treated, 57% could have been treated.116
- Patients with a discharge diagnosis of ischemic stroke were identified in 7 California hospitals participating in the California Acute Stroke Pilot Registry. Six points of care were tracked: thrombolysis, receipt of antithrombotic medications within 48 hours, prophylaxis for deep vein thrombosis, smoking cessation counseling, and prescription of lipid-lowering and antithrombotic medications at discharge. Overall, rates of optimal treatment improved for patients treated in year 2 compared to year 1, with 63% of patients receiving a perfect score in year 2 compared to 44% in year 1. Rates significantly improved in 4 of the 6 hospitals and for 4 of the 6 interventions. A seventh hospital that participated in the registry but did not implement standardized orders showed no improvement in optimal treatment.117
Hospital Discharges
- From 19792003, the number of discharges from short-stay hospitals with stroke as the first listed diagnosis increased 29% (National Hospital Discharge Survey, CDC/NCHS).
- During 198897, the age-adjusted stroke hospitalization rate increased 18.6% (from 560 to 664 per 100 000), while total hospitalizations increased 38.6% (from 592 811 to 821 760). Hospitalization rates did not change for ages 3564 but increased for persons age 65 and older. This increase was greater for men than for women. The average length of hospital stay fell from 11.1 to 6.2 days. Total person-days in hospital decreased 22%.118 (Stroke in this study includes ICD/9 431434 and 436438. The American Heart Association uses 430438.)
- Between 1980 and 1999, hospital discharge rates for stroke increased for blacks and whites; the in-hospital mortality rates decreased for both black and white patients. Generally, the risk of a stroke hospitalization was more than 70% greater for blacks than for whites. Both groups were similar in terms of in-hospital mortality rates.119 Note: Estimates by race, especially time trends, are affected by the increasing underreporting of race in the National Hospital Discharge Survey.120
- Data from Ambulatory Care Visits to Physician Offices, Hospital Outpatient Departments, and Emergency Departments: U.S., 19992000, showed the number of visits for stroke was 3.0 million.56
Awareness of Stroke Warning Signs and Risk Factors
- 2001 data from the BRFSS study of the CDC, in 17 states and the US Virgin Islands, showed that public awareness of the major stroke warning signs was high.
- Sudden numbness or weakness of the face, arm or leg94.1%
- Sudden confusion, trouble speaking or understanding87.9%
- Sudden trouble walking, dizziness or loss of balance or coordination85%
- Sudden trouble seeing in 1 or both eyes68.1%
- Sudden severe headache with no known cause61.3%
- 37.8% incorrectly reported sudden chest pain as a sign of stroke.121
- A study was conducted of patients admitted to an emergency department with possible stroke, to determine knowledge of the signs, symptoms and risk factors of stroke. Of the 163 patients able to respond, 39% did not know a single sign or symptom. Patients above age 65 were less likely than those under 65 to know a sign or symptom of stroke (47% versus 28%). Forty-three percent did not know a single risk factor for stroke. Overall, almost 40% of patients admitted with a possible stroke did not know the signs, symptoms and risk factors of stroke.122
- A study of over 2100 respondents to a random-digit telephone survey in Cincinnati, Ohio, in 2000, showed that 70% of respondents correctly named at least 1 established stroke warning sign versus 57% in 1995, and 72% correctly named at least 1 established risk factor versus 68% in 1995.123
- The Heart and Stroke Foundation of Ontario, Canada, conducted a public opinion polling in 4 communities to determine the level of awareness of the warning signs of stroke and to determine the impact of different media strategies. Television advertising significantly increased the ability to name the warning signs. There was no significant change in communities receiving print advertising.124
- 2001 BRFSS data from over 61 000 adults showed that only 17.2% overall correctly classified all stroke symptoms and indicated that they would call 911 if they thought someone was having a stroke.125
- In 1995, a telephone survey was conducted in the Greater Cincinnati area. Fifty-seven percent of demographically eligible individuals correctly listed at least 1 of the established warning signs and 68% correctly listed 1 of the established risk factors. Respondents age 75 or older were less likely to correctly list 1 warning sign and were less likely to list 1 stroke risk factor.126
- Patients were recruited from the Academic Medical Center Consortium, the Cardiovascular Health Study and United HealthCare. Only 41% were aware of their increased risk for stroke. About 74% of patients recalled being told of their increased stroke risk by a physician in comparison with 28% who did not recall. Younger patients, depressed patients, those in poor current health, and those with a history of TIA were most likely to be aware of their risk.127
- An AHA-sponsored random-digit dialing telephone survey was conducted in mid 2003. Only 26% of women over age 65 reported being well informed about stroke. Correct identification of the warning signs of stroke was low among all racial/ethnic and age groups.128
- Among participants in a study by the National Stroke Association, 2.3% reported having been told be a physician that they had a TIA. Of those with a TIA, only 64% saw a physician within 24 hours of the event. Only 8.2% correctly related the definition of TIA and 8.6% could identify a typical symptom. Men, nonwhites, and those with lower income and fewer years of education were less likely to be knowledgeable about TIA.75
- Participants in the 1999 World Senior Games received 1 or more free screening tests and completed an awareness questionnaire. Results indicate that stroke education should be targeted at the very elderly, those who have less than a college education and those who do not have a history of chronic disease. It also may be effectively directed toward those with higher cholesterol.129
Cost
- The estimated direct and indirect cost of stroke for 2006 is $57.9 billion.
- In 2001, $3.7 billion ($6037 per discharge) was paid to Medicare beneficiaries discharged from short-stay hospitals for stroke.35
- The mean lifetime cost of ischemic stroke in the United States is estimated at $140 048. This includes inpatient care, rehabilitation and follow-up care necessary for lasting deficits. (All numbers converted to 1999 dollars using the medical component of CPI.)130
- In a population study of stroke costs within 30 days of an acute event, the average cost was $13 019 for mild ischemic strokes and $20 346 for severe ischemic strokes (4 or 5 on the Rankin Disability Scale).131
- Inpatient hospital costs for an acute stroke event account for 70% of the first-year post-stroke costs.130
- The largest components of acute care costs were room charges (50%), medical management (21%) and diagnostic costs (19%).132
- Mortality within 7 days, subarachnoid hemorrhage, and stroke while hospitalized for another condition are associated with higher costs in the first year. Conversely, lower costs are associated with mild cerebral infarctions or residence in a nursing home prior to the stroke.131
- Demographic variables (age, sex and insurance status) are not associated with stroke cost. Severe strokes (NIHSS score greater than 20) cost twice as much as mild strokes, despite similar diagnostic testing. Co-morbidities such as ischemic heart disease and AF predict higher costs.132,133
Operations and Procedures
- In 2003, an estimated 117 000 inpatient endarterectomy procedures were performed in the United States. Carotid endarterectomy is the most frequently performed surgical procedure to prevent stroke.
Stroke in Children
- Stroke in children has a peak in the perinatal period. In the National Hospital Discharge Survey from 198098, the rate of stroke for infants less than 30 days old (per 100 000 live births per year) was 26.4, with rates of 6.7 for hemorrhagic stroke and 17.8 for ischemic stroke.134
- A history of infertility, preeclampsia, prolonged rupture of membranes, and chorioamnionitis were found to be independent risk factors for radiologically confirmed perinatal arterial ischemic stroke in the Kaiser Permanente Medical Care Program. The risk of perinatal stroke increased approximately 25-fold with an absolute risk of 1 per 200 deliveries when 3 or more of the following antenatally determined risk factors were present: infertility, preeclampsia, chorioamnionitis, prolonged rupture of membranes, primiparity, oligohydramnios, decreased fetal movement, prolonged second stage of labor, and fetal heart rate abnormalities.135
- The Greater Cincinnati/Northern Kentucky Stroke Study found the stroke rate per 100 000 for children ages 114 was 2.7. The rate of ischemic stroke and intracerebral hemorrhage is similar in this age group.136,137
- Stroke in childhood and young adulthood has a disproportionate impact on the affected patients, their family and society, compared to stroke at older ages. Outcome of childhood stroke was a moderate or severe deficit in 42% of cases.138
- Compared to the stroke risk of white children, black children have a higher relative risk of 2.12, Hispanics have a lower relative risk of 0.76, and Asians have a similar risk. Boys have a 1.28-fold higher risk of stroke than girls. There are no ethnic differences in stroke severity or case-fatality, but boys have a higher case-fatality rate for ischemic stroke. The increased risk among blacks is not fully explained by the presence of sickle cell disease, nor is the excess risk among boys fully explained by trauma.139
- Despite current treatment, 1 out of 10 children with ischemic stroke will have a recurrence within 5 years.140
- Cerebrovascular disorders are among the top 10 causes of death in children, with rates highest in the first year of life. Stroke mortality in children under 1 year of age has remained the same over the last 40 years.134
- From 197998 in the United States, childhood mortality from stroke declined by 58% overall, with reductions in all major subtypes.141
- Ischemic stroke decreased by 19%, subarachnoid hemorrhage by 79%, and intracerebral hemorrhage by 54%.
- Black ethnicity was a risk factor for mortality from all stroke types.
- Male sex was a risk factor for mortality from subarachnoid hemorrhage and intracerebral hemorrhage but not from ischemic stroke.
- Sickle cell disease is the most important cause of ischemic stroke among African-American children. The Stroke Prevention Trial in Sickle Cell Anemia (STOP) demonstrated the efficacy of blood transfusions for primary stroke prevention in high-risk children with sickle cell disease in 1998. First admission rates for stroke in California among persons under age 20 with sickle cell disease showed a dramatic decline subsequent to the publication of the STOP study. For the study years 199198, 93 children with sickle cell disease were admitted to California hospitals with a first stroke; 92.5% were ischemic and 7.5% were hemorrhagic. The first-stroke rate was 0.88 per 100 person-years during 199198, compared to 0.50 in 1999 and 0.17 in 2000 (P<0.005 for trend).142
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5. High Blood Pressure
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(ICD/9 401404) (ICD/10 I10I15). See
Table 5A.
Prevalence
- HBP is defined as:
- systolic pressure of 140 mm Hg or higher, or diastolic pressure of 90 mm Hg or higher
- taking antihypertensive medicine
- being told at least twice by a physician or other health professional that you have HBP
- "Prehypertension" is systolic pressure of 120139 mm Hg, or diastolic pressure of 8089 mm Hg, and both not taking antihypertensive medication, or not being told on 2 occasions by a doctor or other health professional that you have hypertension.
- Nearly 1 in 3 adults has HBP.145
- About 28% of American adults age 18 and older, or about 59 million people, have "prehypertension" (NHANES 19992002, CDC/NCHS, NHLBI).
- In a study conducted in 19992000, 39% of persons were normotensive, 31% were prehypertensive, and 29% were hypertensive. The age-adjusted prevalence of prehypertension was greater in men (39%) than in women (23.1%). African Americans ages 2039 had a higher prevalence of prehypertension (37.4%) than whites (32.2%) and Mexican Americans (30.9%), but their prevalence was lower at older ages because of a higher prevalence of hypertension.146
- A higher percentage of men than women have HBP until age 45. From ages 4554, the percentage of women is slightly higher. After that a much higher percentage of women have HBP than men do ( CDC/NCHS).
- HBP is 23 times more common in women taking oral contraceptives, especially in obese and older women, than in women not taking them (JNC 5 and 6).
- Data from the BRFSS study of the CDC showed that in 2003, 24.8% of respondents had been told they had HBP (CDC Web site).
Race/Ethnicity and HBP
- The prevalence of hypertension in blacks in the United States is among the highest in the world. Compared with whites, blacks develop HBP earlier in life and their average blood pressures are much higher. As a result, compared with whites, blacks have a 1.3-times greater rate of nonfatal stroke, a 1.8-times greater rate of fatal stroke, a 1.5-times greater rate of heart disease death and a 4.2-times greater rate of end-stage kidney disease (JNC 5 and 6).
- Within the African-American community, rates of hypertension vary substantially.147
- Those with the highest rates are more likely to be middle aged or older, less educated, overweight or obese, physically inactive, and to have diabetes.
- Those with the lowest rates are more likely to be younger, but also overweight or obese.
- Those with uncontrolled HBP who are not on antihypertensive medication tend to be male, younger and have infrequent contact with a physician.
- Compared with white women, black women have an 85% higher rate of ambulatory medical care visits for HBP.148
- A study from 198894 to 19992000, of children and adolescents ages 817 showed that among NH blacks, mean systolic BP levels increased 1.6 mm Hg among girls and 2.9 mm Hg among boys, when compared with NH whites. Among Mexican Americans, girls systolic BP increased 1.0 mm Hg and boys increased 2.7 mm Hg when compared with NH whites.149
- Data from the 19992003 NHIS study of the CDC/NCHS showed that American Indian or Alaska Native adults age 18 and older were less likely (29.7%) than black adults (33.9%) and more likely than white adults (22.8%) and Asian adults (19.3%) to ever have been told they had hypertension.150
- The prevalence of HBP among blacks and whites in the southeastern United States is greater and death rates from stroke are higher than among those in other regions (JNC 5 and 6).
Mortality
HBP was listed as a primary or contributing cause of death in about 277 000 of over 2 440 000 US deaths in 2003.
- From 19932003, the age-adjusted death rate from HBP increased 29.3%, and the actual number of deaths rose 56.1%.
- The 2003 overall death rate from HBP was 18.1. Death rates were 14.9 for white males, 49.7 for black males, 14.5 for white females and 40.8 for black females.
- As many as 30% of all deaths in hypertensive black men and 20% of all deaths in hypertensive black women may be due to HBP (JNC 5 and 6).
Control
- In NHANES 19992000, rates of control were lower in Mexican Americans (17.7%) compared with NH whites (33.4%) and NH blacks (28.1%).151
- The awareness, treatment and control of HBP among those in the CHS age 65 and older improved during the 1990s. The percentages who were aware of and treated for HBP were higher among blacks than among whites. Prevalences with HBP under control were similar. For both groups combined, the control of BP to lower than 140/90 mm Hg increased from 37% in 1990 to 49% in 1999. Improved control was achieved by an increase in antihypertensive medications per person and by increasing the proportion of the CHS population treated for hypertension from 34.5% to 51.1%.152
- Data from the FHS study of the NHLBI show that in Americans age 80 and older, only 38% of men and 23% of women had BP that met targets set forth in the National High Blood Pressure Education Programs clinical guidelines.153
Aftermath
- About 69% of people who have a first heart attack, 77% who have a first stroke, and 74% who have CHF have BP higher than 140/90 mm Hg (NHLBI unpublished estimates from ARIC, CHS and FHS Cohort and Offspring Studies).
- People with systolic BP of 160 mm Hg or higher and/or diastolic BP of 95 mm Hg or higher have a RR for stroke about 4 times greater than for those with normal BP.154
- Hypertension precedes the development of CHF in 91% of cases. HBP is associated with a 23 times higher risk for developing CHF (FHS, NHLBI, Levy et al155).
Hospital Discharge
- Data from Ambulatory Care Visits to Physician Offices, Hospital Outpatient Departments, and Emergency Departments: U.S., 19992000, showed the number of visits for essential hypertension was 37.5 million.56
Awareness
- Data from NHANES 19992002 showed that of those with hypertension, 63.4% were aware of their condition, 45.3% were under current treatment, 29.3% had it under control, and 70.7% did not have it controlled.158
Cost
- The estimated direct and indirect cost of HBP for 2006 is $63.5 billion.
End-Stage Renal Disease (ESRD)
(ICD/10 N18.0)
ESRD (also called end-stage kidney disease) is a condition closely related to high blood pressure, and occurs when the kidneys can no longer function normally on their own. When this happens, patients are required to undergo treatment such as kidney dialysis or a kidney transplant. ESRD morbidity rates vary dramatically among different age, race, ethnicity and sex population groups. Morbidity rates tend to increase with age, then fall off for the oldest age group. The age group with the highest incidence rate is ages 7579; for prevalence rates, its ages 7074. Chronic kidney disease (categorized in stages by level of estimated glomerular filtration rate and urine proteins), which eventually progresses to ESRD, is also a substantial public health burden in the United States. The excess CVD risk in people with chronic renal disease is caused, in part, by a higher prevalence of CVD risk factors in this group than in the general population. The main factors include older age, HBP, high blood cholesterol and lipids, diabetes and physical inactivity. An independent, graded association was observed between a reduced estimated glomerular filtration rate (GFR, an indicator of kidney function) and the risk of death, cardiovascular events and hospitalization in a large, community-based population of over 1 million men and women.159
- The incidence of reported ESRD has almost doubled in the past 10 years (NHLBI from usrds.org Web site).
- In 2003, 102 567 new cases of ESRD were reported.
- Nearly 453 000 patients were being treated for ESRD by the end of 2003.
- 82 588 patients died from ESRD in 2003.
- More than 15 700 kidney transplants were performed in 2003.
- Diabetes continues to be the most common reported cause of ESRD.
- An estimated 11%, or 19.2 million American adults, have between stage 14 chronic kidney disease.160
- Between 1996 and 1997, 3.2% of the Medicare population had a diagnosis of chronic kidney disease, representing 63.6% of persons who progressed to ESRD after 1 year.161
Age, Sex, Race and Ethnicity
- The average incidence rates for pediatric ESRD are more than twice as high among children ages 1519 as for children ages 1014. The rates are more than 3 times higher than those for children ages 04 and 59.
- Children with pediatric ESRD have high transplantation rates. More than 44% of children starting therapy received a transplant during the first year of therapy, compared with 10% of patients ages 2064 at ESRD incidence.
- The median age of the prevalent population is 58.1 years (59.2 for whites, 56.1 for blacks, 56.7 for Hispanics, 58.9 for Asians and 57.5 for Native Americans) (USRDS 2004 Annual Data Report. NIH, NIDDK).
- Treatment of ESRD is more common in men than in women.
- Blacks and Native Americans have much higher rates of ESRD than whites and Asians. Blacks represent 29% of treated ESRD patients.
- Without treatment, ESRD is fatal. Even with dialysis treatment, 20% of ESRD patients die yearly (2004 National Healthcare Disparities Report, AHRQ, USDHHS).
- Expenditures for ESRD totaled almost $23 billion in 2001 (2004 National Healthcare Disparities Report, AHRQ, USDHHS).
- Performance for urea reduction ratio of 65 or greater in hemodialysis patients increased from 74% in 1996 to 90% in 2002 (2004 National Healthcare Disparities Report, AHRQ, USDHHS).
- In both 2001 and 2002, the proportion of adult hemodialysis patients who received adequate dialysis was lower among blacks and higher among Asians compared with whites. The proportion who received adequate dialysis was similar among Hispanics and NH whites.
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6. Congenital Cardiovascular Defects
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(ICD/9 745747) (ICD/10 Q20Q28). See
Table 6A.
Congenital cardiovascular defects, also known as congenital heart defects, are structural problems arising from abnormal formation of the heart or major blood vessels. At least 15 distinct types of congenital defects are recognized, with many additional anatomic variations.
Defects range in severity from tiny pinholes between chambers that are nearly irrelevant and often resolve spontaneously, to major malformations that result in fetal loss or death in infancy or childhood. Common complex defects include:
- tetralogy of Fallot (914%)
- transposition of the great arteries (1011%)
- atrioventricular septal defects (410%)
- coarctation of the aorta (811%)
- hypoplastic left heart syndrome (48%)
- ventricular septal defects (VSDs), the most common defect. Many close spontaneously, but VSDs still account for 1416% of defects requiring an invasive procedure within the first year of life.162
Prevalence
About 1 million Americans, or 3.4 per 1000, reported being told by a physician that they had a congenital cardiovascular defect, according to a national interview survey in 199395. The current prevalence is likely to be higher, since both diagnosis and treatment for all types of defects have improved substantially over the past decade, and since some patients may have been unaware of their diagnosis at the time of the survey (CDC/NCHS, HIS Survey, 199395. Unpublished data).
Incidence
Major defects are usually apparent in the neonatal period, but minor defects may not be detected until adulthood. Thus, true measures of incidence for congenital heart disease would need to record new cases of defects presenting anytime in fetal life through adulthood. However, estimates are only available for new cases detected between birth and 30 days of life, known as birth prevalence, or as new cases detected in the first year of life only. Both of these are typically reported as cases per 1000 live births per year, and do not distinguish between tiny defects that resolve without treatment and major malformations. To distinguish more serious defects, some studies also report new cases of sufficient severity to undergo an invasive procedure or result in death within the first year of life. Despite the absence of true incidence figures, some data are available, and are shown in Table 6B.
- According to the CDC, 1 in every 110 babies in the metropolitan Atlanta area was born with a congenital heart defect, including some infants with tiny defects that resolved without treatment. Some defects occur more commonly in males or females, or in whites or blacks.163
- Nine (9.0) defects per 1000 live births are expected, or 36 000 babies per year in the United States. Of these, several studies suggest that 9200, or 2.3 per 1000 live births, require invasive treatment or result in death in the first year of life.164
- Estimates are also available for bicommisural aortic valves, occurring in 13.7 per 1000 people; these defects may not require treatment in infancy, but can cause problems later in adulthood.165,166
- Some studies suggest that as many as 5% of newborns, or 200 000 per year, are born with tiny muscular ventricular septal defects, almost all of which close spontaneously.167,168 These defects nearly never require treatment, so they arent included in Table 6B.
Mortality
- As an underlying or contributing cause of death6110.
- Congenital cardiovascular disease is the most common cause of infant death from birth defects; 1 in 3 infants who die from a birth defect have a heart defect (NVSS Final Data for 2000).
- The 2002 overall death rate for congenital cardiovascular defects was 1.4. Death rates were 1.5 for white males, 1.9 for black males, 1.3 for white females and 1.6 for black females. Crude infant death rates (under 1 year) were 41.5 for white babies and 51.7 for black babies.
- In 2000, 213 000 life years were lost before age 65 due to deaths from congenital cardiovascular disease. This is nearly equivalent to the life years lost from leukemia, prostate cancer and Alzheimers disease combined (CDC/NCHS; NHLBI).
- In 2000, over 25 000 cardiovascular operations for congenital heart disease were performed on children less than 20 years of age. Inpatient mortality after all types of cardiac surgery was 4.7%. However, mortality risk varies substantially for different defect types, from 0.3% for atrial septal defect repair to 20.1% for first stage palliation for hypoplastic left heart syndrome. Of these operations, 54% were performed in males. In unadjusted analyses, mortality after cardiac surgery was somewhat higher for females than for males (4.8% versus 4.6%) (Healthcare Cost and Utilization Project, HCUP KID2000).
- Mortality from congenital defects has been declining. From 197997, age-adjusted death rates from all defects declined 39%, and deaths tended to occur at progressively older ages. However, 43% of deaths still occurred in infants of less than 1 year of age. Mortality varies considerably according to type of defect.169
- From 19922002, death rates for congenital cardiovascular defects declined 25.0%, while the actual number of deaths declined 24.1%.
Hospitalizations
In 2000, over 130 000 hospitalizations, as a primary or secondary diagnosis, were for infants or children with congenital cardiovascular disease; hospital charges were $6.5 billion (HCUPKID2000).
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7. Heart Failure
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(ICD/9 428) (ICD/10 I50). See
Table 7A.
Prevalence
- In a study conducted in Minnesota, 20.8% of the population had mild diastolic dysfunction, 6.6% had moderate diastolic dysfunction, 0.7% had severe diastolic dysfunction, and 5.6% had moderate or severe diastolic dysfunction with normal ejection fraction (EF). The prevalence of any systolic dysfunction was 6.0% and moderate or severe systolic dysfunction was 2.0%. CHF was much more common among those with systolic or diastolic dysfunction than in those with normal ventricular function. Even among those with moderate or severe diastolic or systolic dysfunction, less than half had recognized CHF. Mild diastolic dysfunction and moderate or severe diastolic dysfunction were predictive of all-cause mortality.170
Incidence
- Based on the 44-year follow-up of the NHLBIs FHS2...
- HF incidence approaches 10 per 1000 population after age 65.
- Seventy-five percent of HF cases have antecedent hypertension.
- About 22% of male and 46% of female heart attack (MI) victims will be disabled with HF within 6 years.
- Based on 197196 data from the NHLBIs FHS171...
- At age 40, the lifetime risk of developing CHF for both men and women is 1 in 5.
- At age 40, the lifetime risk of CHF occurring without antecedent MI is 1 in 9 for men and 1 in 6 for women.
- The lifetime risk doubles for people with BP greater than 160/90 mm Hg versus those with BP less than 140/90 mm Hg.
- The annual rates per 1000 population of new and recurrent HF events for non-black men are 21.5 for ages 6574, 43.3 for ages 7584, and 73.1 for age 85 and older. For non-black women in the same age groups the rates are 11.2, 26.3 and 64.9, respectively. For black men the rates are 21.1, 52.0 and 66.7, and for black women the rates are 18.9, 33.5 and 48.4, respectively (CHS, NHLBI).
- A community-based cohort study conducted in Olmsted County, Minn., showed that the incidence of HF (ICD9/428) has not declined during 2 decades, but survival after onset has increased overall, with less improvement among women and elderly persons.172
Risk Factors
- A study of the predictors of HF among women with CHD found that diabetes was the strongest risk factor. Diabetic women with elevated body mass index (BMI) or depressed creatinine clearance were at highest risk with annual incidence rates of 7% and 13% respectively. Among nondiabetic women with no risk factors, the annual incidence rate was 0.4%. The rate increases with each additional risk factor, and nondiabetic women with 3 or more risk factors had an annual incidence of 3.4%. Among diabetic participants with no additional risk factors, the annual incidence of HF was 3.0% compared with 8.2% among diabetics with at least 3 additional risk factors. Diabetics with fasting glucose >300 mg/dL had a 3-fold adjusted risk of developing HF, compared with diabetics with controlled fasting blood sugar levels.173
Mortality
As an underlying or contributing cause of death286 700.
- Based on the 44-year follow-up of the NHLBIs FHS...
- Eighty percent of men and 70% of women under age 65 who have HF will die within 8 years.
- After HF is diagnosed, survival is poorer in men than in women, but fewer than 15% of women survive more than 812 years. The 1-year mortality rate is high, with 1 in 5 dying.
- In people diagnosed with HF, sudden cardiac death occurs at 69 times the rate of the general population.
- From 19932003, deaths from HF (ICD 428) increased 20.5%. In the same time period, the death rate declined 2.0%.
- The 2003 overall death rate for HF was 19.7. Death rates were 20.5 for white males, 23.4 for black males, 18.4 for white females and 20.4 for black females.
Hospital Discharges
- Hospital discharges for HF rose from 399 000 in 1979 to 1 093 000 in 2003, an increase of 174% (National Hospital Discharge Survey, CDC/NCHS).
- Data from Ambulatory Care Visits to Physician Offices, Hospital Outpatient Departments, and Emergency Departments: US, 19992000, showed the number of visits for CHF was 3.4 million.56
Cost
- The estimated direct and indirect cost of HF in the United States for 2006 is $29.6 billion.
- In 2001, $4.0 billion ($5912 per discharge) was paid to Medicare beneficiaries for CHF.35
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8. Other Cardiovascular Diseases
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Mortality, prevalence and death rate data in this section are
for 2002 or 2003. Mortality for 2003 is preliminary. Mortality
as an underlying or contributing cause of death is for 2002.
Hospital discharge data for 2003 are based on ICD/9 codes.
Arrhythmias (Disorders of Heart Rhythm)
(ICD/9 426, 427) (ICD/10 I46I49)
Mortality38 698. Mortality as an underlying or contributing cause of death479 700 of over 2 440 000 US deaths. Hospital discharges856 000. In 2001, $2.7 billion ($6634 per discharge) was paid to Medicare beneficiaries for cardiac dysrhythmias.35
Atrial fibrillation and flutter (ICD/9 427.3) (ICD/10 I48). Mortality10 089. Mortality as an underlying or contributing cause of death77 800. Prevalence>2 200 000. Incidence>75 000.174 Hospital discharges470 000.
- In the FHS study, the lifetime risk for development of AF is 1 in 4 for men and women 40 years of age and older. Lifetime risks for AF are high (1 in 6), even in the absence of antecedent CHF or MI.175
- Data from the National Hospital Discharge Survey (19962001) on cases that included AF as a primary discharge diagnosis found that176:
- About 44.8% of patients were men.
- The mean age for men was 66.8 years versus 74.6 for women.
- The racial breakdown for admissions was 71.2% white, 5.6% black, 2.0% other races (20.8% were not specified).
- African-American patients were much younger than patients of other races.
- The incidence in men ranged from 20.58/100 000 persons per year for patients ages 1544 to 1077.39/100 000 persons per year for patients age 85 and older. In women, the incidence ranged from 6.64/100 000 persons per year for patients ages 1544 to 1 203.7/100 000 persons per year for those age 85 and older.
- From 19962001, hospitalizations with AF as the first-listed diagnosis increased 34%.
- Age-adjusted death rates for AF were highest among whites (25.7) and blacks (16.4) and higher for men (34.7) than women (22.8).177
- The most common diseases listed as the primary diagnosis for persons hospitalized with AF were CHF (11.8%), followed by AF (10.9%), CHD (9.9%), and stroke (4.9%).177
- AF is an independent risk factor for stroke, increasing risk about 5-fold. The risk for stroke attributable to AF increases with age.93
- AF is responsible for about 1520% of all strokes.178
- AF is also an independent risk factor for stroke recurrence and stroke severity. A recent report showed people who had AF and were not treated with anticoagulants had a 2.1-fold increase in risk for recurrent stroke and a 2.4-fold increase in risk for recurrent severe stroke.179
- People who have strokes caused by AF have been reported as 2.23 times more likely to be bedridden compared to those who have strokes from other causes.180
- Participants in the FHS Offspring Study of the NHLBI were examined between 1984 and 1987 and monitored for 10 years. Data show that symptoms of anger and hostility were predictive of 10-year incidence of AF in men.181
- Participants in the FHS study of the NHLBI were followed from 196899. At age 40, lifetime risks for AF were 26.0% for men and 23.0% for women. At 80 years, lifetime risks for AF were 22.7% for men and 21.6% for women. In further analysis, counting only those who had development of AF without prior or concurrent CHF or MI, lifetime risk for AF was approximately 16%.175
- Tachycardia (ICD/9 427.0,1,2) (ICD/10 I47.0,1,2,9). Mortality610. Mortality as an underlying or contributing cause of death7200. Hospital discharges84 000.
- Paroxysmal supraventricular tachycardia (ICD/9 427.0) (ICD/10 I47.1). Mortality151. Mortality as an underlying or contributing cause of death1454. Hospital discharges28 000.
- Ventricular fibrillation (ICD/9 427.4) (ICD/10 I49.0). Mortality1264. Mortality as an underlying or contributing cause of death13 100. Hospital discharges8000. Ventricular fibrillation is listed as the cause of relatively few deaths, but the overwhelming number of sudden cardiac deaths from coronary disease (estimated at about 330 000 per year) are thought to be from ventricular fibrillation.
Arteries, Diseases of
(ICD/9 440448) (ICD/10 I70I79) (Includes peripheral arterial disease)
Mortality37 647. Mortality as an underlying or contributing cause of death115 400. Hospital discharges262 000.
Aortic aneurysm (ICD/9 441) (ICD/10 I71). Mortality14 751. Mortality as an underlying or contributing cause of death20 800. Hospital discharges53 000.
Atherosclerosis (ICD/9 440) (ICD/10 I70) is a process that leads to a group of diseases characterized by a thickening of artery walls. Preliminary mortality (2003)13 030. Mortality as an underlying or contributing cause of death66 000. Hospital discharges118 000. Atherosclerosis causes many deaths from heart attack and stroke and accounts for nearly three-fourths of all deaths from CVD (FHS, NHLBI).
- In 1999 US community hospitals billed $26.2 billion for coronary atherosclerosis, more than for any other condition (AHRQ Electronic Newsletter, June 14, 2002).
Other diseases of arteries (ICD/9 442448) (ICD/10 I72I78). Preliminary mortality (2003)9867. Mortality as an underlying or contributing cause of death10 109. Hospital discharges91 000.
- Kawasaki disease (ICD/9 446.1) (ICD/10 M30.3). Mortality9. Mortality as an underlying or contributing cause of death14. Hospital discharges5000, primary plus secondary diagnoses.
- About 76% of Kawasaki disease patients are under age 5.182
- Up to 2500 cases of Kawasaki disease are diagnosed yearly. Kawasaki disease occurs more often among boys (63%) and among those of Asian ancestry.183
- The highest incidence in the United States is in Hawaii. A hospitalization rate of 47.7 per 100 000 children under age 5 was reported during the mid-1990s. In the continental United States, the estimated incidence is from 919 per 100 000 children.184
Peripheral arterial disease (PAD) affects about 8 million Americans and is associated with significant morbidity and mortality.185,186
- A study from the NHANES 19992000 data found that PAD affects about 5 million adults. Prevalence increases dramatically with age and disproportionately affects blacks.187 However, the measurement of systolic BP utilizing the right arm only and the omission of queries for surgical procedures to correct PAD in this study led to an underestimate of the true PAD prevalence. Experts in the field generally agree that PAD affects approximately 8 million Americans.185,186
- PAD affects 1220% of Americans age 65 and older. Despite its prevalence and cardiovascular risk implications, only 25% of PAD patients are undergoing treatment.188
- In the general population, only about 10% of persons with PAD have the classic symptoms of intermittent claudication (IC). About 40% do not complain of leg pain, while the remaining 50% have a variety of leg symptoms different from classic claudication.185,189 However, in an older, disabled, population of women, as many as two-thirds of individuals with PAD had no exertional leg symptoms.190
- The risk factors for PAD are similar to those for CHD, although diabetes and cigarette smoking are particularly strong risk factors for PAD.191
- Persons with PAD have impaired function and quality of life. This is true even for persons who do not report leg symptoms. Furthermore, PAD patients, including those who are asymptomatic, experience significant decline in lower extremity functioning over time.192,193
- PAD is a marker for systemic atherosclerotic disease. Persons with PAD, compared to those without, have 45 times the risk of dying of a CVD event, resulting in 23 times higher total mortality risk.186,194
- In the Framingham Heart Study (FHS), the incidence of PAD was based on symptoms of IC in subjects ages 2962. Annual incidence of IC per 10 000 subjects at risk rose from 6 in men and 3 in women ages 3044 to 61 in men and 54 in women ages 6574.195 IC incidence has declined since 1950, but mortality has remained high and unchanged.196
- Several studies have evaluated both symptomatic and asymptomatic PAD using the ankle brachial index. The prevalence of asymptomatic PAD was 25.5% among 1537 participants of the Systolic Hypertension in the Elderly Program (SHEP).195
- In the FHS, the annual mortality rate was almost 4 times greater in subjects with IC. In a major cohort study, investigators observed a risk for all-cause mortality in these subjects that was 3.1 times higher than that for patients without PAD. In addition, PAD patients had a 5.9-times higher risk for death from CVD complications and a 6.6-times higher risk for death from CHD specifically.186,195
- African-American ethnicity was a strong and independent risk factor for PAD, and was not explained by higher levels of diabetes, hypertension, and BMI. African Americans had a higher PAD prevalence than NH whites (OR= 2.3). There was no evidence of a greater susceptibility of African Americans to CVD risk factors as a reason for their higher PAD prevalence.197
- Data from NHANES 19992000 (CDC/NCHS), show that even low blood levels of lead and cadmium may increase the risk of PAD. Exposure to these 2 metals is possible through cigarette smoke. The risk was 2.8 for high levels of cadmium and 2.9 for high levels of lead. The odds ratio of PAD for current smokers was 4.13 compared to people who had never smoked.198 Results from the NHANES 19992000 survey of the CDC/NCHS showed a remarkably high prevalence of PAD among patients with renal insufficiency. Accurate identification of patients with renal insufficiency combined with routine ABI measurement in this group would greatly enhance efforts to detect subclinical PAD.199
Bacterial Endocarditis
(ICD/9 421.0) (ICD/10 I33.0)
Mortality as an underlying or contributing cause of death2370. Hospital discharges29 000, primary plus secondary diagnoses.
Cardiomyopathy
(ICD/9 425) (ICD/10 I42)
Mortality27 728. Mortality as an underlying or contributing cause of death54 700. Hospital discharges39 000.
- Eighty-seven percent of cases are congestive or dilated cardiomyopathy. Of patients with dilated cardiomyopathy, 50% are alive 5 years after their initial diagnosis and 25% are alive 10 years after the diagnosis (Facts About Cardiomyopathy, NIH, NHLBI, 1995).
- Mortality from cardiomyopathy is highest in older persons, men and blacks (FHS, NHLBI).
- Tachycardia-induced cardiomyopathy develops slowly and appears reversible, but recurrent tachycardia causes rapid decline in left ventricular function and development of HF. Sudden death is possible.200
- Since 1996, the NHLBIs Pediatric Cardiomyopathy Registry has collected data on all children with newly diagnosed cardiomyopathy in New England and the Central Southwest (Texas, Oklahoma and Arkansas).201
- The overall incidence of cardiomyopathy is 1.13 cases per 100 000 in children younger than age 18.
- In children under 1 year of age, the incidence is 8.34 and in children ages 118 its 0.70 per 100 000.
- The annual incidence is lower in white than in black children; higher in boys than in girls; and higher in New England (1.44 per 100 000) than in the Central Southwest (0.98 per 100 000).
- Studies show that 36% of young athletes who die suddenly have probable or definite hypertrophic cardiomyopathy.202
Rheumatic Fever/Rheumatic Heart Disease
(ICD/9 390398) (ICD/10 I00I09). See Table 8A.
Incidence
- Many operations on heart valves are related to rheumatic heart disease (RHD).
- The incidence of rheumatic fever (RF) remains higher in African Americans, Puerto Ricans, Mexican Americans and American Indians.2
Mortality
- Mortality as an underlying or contributing cause of death7440.
- In 1950, about 15 000 Americans (adjusted for changes in ICD codes) died of RF/RHD compared with about 3500 today.
- From 19932003 the death rate from RF/RHD fell 36.8%, while actual deaths declined 24.6%.
- The 2003 overall death rate for RF/RHD was 1.2. Death rates were 1.0 for white males and 0.9 for black males, 1.4 for white females and 1.2 for black females.
Valvular Heart Disease
(ICD/9 424) (ICD/10 I34I38)
Mortality19 989. Mortality as an underlying or contributing cause of death42 590. Hospital discharges95 000.
- Aortic valve disorders (ICD/9 424.1) (ICD/10 I35). Mortality12 471. Mortality as an underlying or contributing cause of deathabout 26 336. Hospital discharges48 000.
- Mitral valve disorders (ICD/9 424.0) (ICD/10 I34). Mortality2759. Mortality as an underlying or contributing cause of deathabout 6600. Hospital discharges43 000.
- The NHLBIs FHS reports that among people ages 2684, prevalence is about 12% and equal between women and men.
- Pulmonary valve disorders (ICD/9 424.3) (ICD/10 I37). Mortality11. Mortality as an underlying or contributing cause of death35.
- Tricuspid valve disorders (ICD/9 424.2) (ICD/10 I36). Mortality16. Mortality as an underlying or contributing cause of death69.
Operations and Procedures
- In 2003, an estimated 95 000 inpatient valve procedures were performed in the United States.
Venous Thromboembolism
- Venous thromboembolism (VTE) occurs for the first time in about 100 persons per 100 000 each year in the United States. About one-third of patients with symptomatic VTE manifest pulmonary embolism (PE), whereas two-thirds manifest deep vein thrombosis (DVT) alone.203
- Caucasians and African Americans have a significantly higher incidence than Hispanics and Asians or Pacific Islanders.203
- In studies conducted in Worcester, Mass., and Olmsted County, Minn., the incidence of VTE was about 1 in 1000. In both studies, VTE was more common in men; for each 10-year increase in age, the incidence doubled. By extrapolation, its estimated that more than 250 000 patients are hospitalized annually with VTE.204
- The crude incidence rate per 1000 person-years was 0.80 in the ARIC study, 2.15 in the CHS and 1.08 in the combined cohort. Half of the participants who developed incident VTE were women and 72% were white.205
- Over 200 000 new cases of VTE occur annually. Of these, 30% die within 30 days, one-fifth suffer sudden death due to PE, and about 30% develop recurrent VTE within 10 years. Independent predictors for recurrence include increasing age, obesity, malignant neoplasm and extremity paresis.206
- Data from the ARIC study of the NHLBI showed the 28-day fatality from DVT is 9%; from PE, 15%; from idiopathic DVT or PE, 5%; from secondary non-cancer-related DVT or PE, 7%; and secondary cancer-related DVT or PE, 25%.207
- Deep vein thrombosis (ICD/9 451.1) (ICD/10 I80.2). Mortality2809. Mortality as an underlying or contributing cause of death10 530. Hospital discharges9000.
- A review of 9 studies conducted in the United States and Sweden showed that the mean incidence of first DVT in the general population was 5.04 per 10 000 person-years. The incidence was similar in males and females and increased dramatically with age from about 23 per 10 000 person-years at ages 3049 to 20 at ages 7079.208
- Death occurs in about 6% of DVT cases within 1 month of diagnosis.203
- Pulmonary embolism (ICD/9 415.1) (ICD/10 I26). Mortality8620. Mortality as an underlying or contributing cause of death26 600. Hospital discharges 124 000.
- In the Nurses Health Study, nurses age 60 or older in the highest BMI quintile had the highest rates of pulmonary embolism. Heavy cigarette smoking and high blood pressure were also identified as risk factors for PE.204
- Death occurs in about 12% of PE cases within 1 month of diagnosis.203
- A study of Medicare recipients age 65 and older reported 30-day case fatality rates in patients with PE. Overall, men had higher fatality rates than women (13.7% versus 12.8%), and blacks had higher fatality rates than whites (16.1% versus 12.9%).204
- In the International Cooperative Pulmonary Embolism Registry, the 3-month mortality rate was 17.5%. In contrast, the overall 3-month mortality rate in the Prospective Investigation of Pulmonary Embolism Diagnosis was 15%, but only 10% of deaths during 1 year of follow-up were ascribed to PE.204
- The age-adjusted rate of deaths from pulmonary thromboembolism (PTE) decreased from 191 per million in 1979 to 94 per million in 1998 overall, decreasing 56% for men and 46% for women. During this time, the age-adjusted mortality rates for blacks were consistently 50% higher than those for whites, and those for whites were 50% higher than those for people of other races (Asian, American Indian, etc.). Within racial strata, mortality rates were consistently 2030% higher among men than among women.209
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9. Risk Factors
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Tobacco
See
Tables 9A and 9B.
210212
Prevalence
Youth
- In 2003, for grades 912, 30.3% of male students and 24.6% of female students reported current tobacco use; 19.9% of males and 9.4% of females reported current cigar use; and 11.0% of males and 2.2% of females reported current smokeless tobacco use.213
- White youths ages 1824 from families with lower educational attainment report substantially higher smoking rates than black and Mexican-American youths from families with similar educational attainment. Seventy-seven percent of young white men and 61% of young white women are smokers compared with 35% of minority youth.214
- From 19802003, the percentage of high school seniors who smoked in the past month decreased 20%. This percentage decreased by 2.2% in males, 23.7% in females, 9% in whites and 64.3% in blacks or African Americans (Health, United States, 2004, CDC/NCHS).
- An estimated 150 000300 000 children younger than 18 months of age have respiratory tract infections because of exposure to secondhand smoke (CDC/NCHS).
- Childrens exposure to secondhand smoke, as indicated by cotinine levels, dropped between 198894 and 19992002. Overall, 59% of children ages 411 had cotinine in their blood in 19992002, down from 88% in 198894. In 19992002, 84% of NH black children ages 411 had cotinine in their blood compared to 58% of NH white children and 47% of Mexican-American children. The percentage of homes with children under age 7 in which someone smokes on a regular basis decreased from 29% in 1994 to 11% in 2003.215
Adults
- Since 1965 smoking in the United States has declined by 47% among people age 18 and older (Health, United States, 2004, CDC/NCHS).
- Among Americans age 18 and older, 23.4% of men and 18.5% of women are smokers, putting them at increased risk of heart attack and stroke.210
- Use of any tobacco product in 2002 was 32.0% for white only, 28.8% for black or African-American only, 44.3% for American Indian or Alaska Native only, 28.8% for Native Hawaiian or other Pacific Islander only, 18.6% for Asian only and 25.2% for Hispanic or Latino, any race (Health, United States, 2004, CDC).
- Smoking prevalence is higher among those with 911 years of education (34.0%) compared with those with more than 16 years of education (8.0%). Its highest among persons living below the poverty level (29.1%) compared with other income groups.213
- Compared with results from 198891, median cotinine levels measured from 19992002 in nonsmokers have decreased 68% in children, 69% in adolescents, and about 75% in adults. NH blacks have levels more than twice as high as those of NH whites and Mexican Americans. Childrens levels are more than twice those of adults.216
- Data from the BRFSS study of the CDC show that more than one-third of white men and women ages 1824 smoked, the highest rate among all the groups covered in the survey in 2000. Those young people and Hispanic women the same age had the largest increases in smoking rates from 19902000. More than half of men and women ages 1824 from all ethnic groups failed to quit smoking in 2000. Younger white women and men ages 1844 had higher overall risk levels for noncommunicable diseases, probably due to increased smoking and obesity.23
- According to the World Health Organization (WHO), 1 year after quitting, the risk of CHD decreases by 50%. Within 15 years, the relative risk of dying from CHD for an ex-smoker approaches that of a long-time (lifetime) nonsmoker (World No-Tobacco Day 1998, www.who.ch/ntday/ntday98).
- Data from the 2004 NHIS study of the CDC/NCHS showed that American Indian or Alaska Native adults age 18 and older were more likely (33.4%) to be current smokers than NH white adults (22.2%), black adults (20.2%) and Asian adults (11.3%).210
Incidence
- A survey conducted in 2002 found that an estimated 1.4 million Americans began smoking cigarettes daily in 2001. This translates to close to 4000 new regular smokers per day, including more than 2000 youths under age 18 (National Survey on Drug Use and Health, samhsa.gov).
- About 80% of people who use tobacco begin before age 18. The most common age of initiation is 1415.220
- Information from the CDC Health Effects of Cigarette Smoking Fact Sheet, February 2004:
- Cigarette smokers are 24 times more likely to develop CHD than nonsmokers.
- Cigarette smoking approximately doubles a persons risk for stroke.
- Cigarette smokers are more than 10 times as likely as nonsmokers to develop peripheral vascular disease.
Mortality
- From 19972001, an estimated 437 902 Americans died each year of smoking-related illnesses, and 34.7% of these deaths were cardiovascular-related.221
- On average, male smokers die 13.2 years earlier than male nonsmokers, and female smokers die 14.5 years earlier than female nonsmokers.222
- From 19972001, smoking caused 3.3 million years of potential life lost for men and 2.2 million years for women annually.223
- From 19972001, smoking during pregnancy resulted in an estimated 523 male and 387 female infant deaths annually.221
- Current cigarette smoking is a powerful independent predictor of sudden cardiac death in patients with CHD.224
- Cigarette smoking results in a 23-fold risk of dying from CHD.225
- After up to 14.5 years of follow-up of participants in the Lung Health Study (LHS) of the NHLBI, all-cause mortality was significantly lower (15%) compared to those who received usual care.226
- An estimated 35 052 nonsmokers die from CHD each year as a result of exposure to environmental tobacco smoke (MMWR, Vol. 54, No. 25, 2005, CDC).
Health Consequences
- Data from The Health Consequences of Smoking, 2004A Report of the Surgeon General (CDC/NCHS): A study of women younger than 44 years of age found there was a strong dose-relationship for MI, with a risk of 2.5 for those smoking 15 cigarettes per day, rising to 74.6 for those smoking more than 40 cigarettes per day, compared with nonsmokers.
- Another study on female smokers found the highest risk (6.8) for MI was in women younger than 55 years of age.
- One-third of those who receive percutaneous coronary artery vascularization are current smokers, and 5060% continue to smoke after the procedure.
- Cigarette smoking remains a major cause of stroke in the United States. The evidence is sufficient to infer a causal relationship between smoking and subclinical atherosclerosis.
- The 2004 Health Consequences of Smoking Report of the Surgeon General states that the risk of stroke decreases steadily after smoking cessation. Former smokers have the same risk as nonsmokers after 515 years.227
Chewing Tobacco
- About 5 million American men and women use chewing tobacco (NHANES III [198894], CDC/NCHS).
- Rates are highest in the South and rural areas.
- Men use chewing tobacco at 10 times the rate for women. For men, the percentages who use chewing tobacco are 6.8 for whites, 3.1 for blacks, 1.5 for Hispanics, 1.2 for Asians or Pacific Islanders and 7.8 for American Indians or Alaska Natives.
- For women, the percentages are 0.3 for whites, 2.9 for blacks, 0.1 for Hispanics, almost none for Asians or Pacific Islanders and 1.2 for American Indians or Alaska Natives.
- Use rates increase as years of education decrease for both men and women.
Cost
- Direct medical costs ($75.5 billion) and lost productivity costs associated with smoking ($92 billion) total an estimated $167 billion per year.221
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High Blood Cholesterol and Other Lipids
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See
Table 9C.
230
Prevalence
For information on dietary cholesterol, total fat, saturated fat and other factors that affect blood cholesterol levels, see Nutrition section.
Youth
- Among children and adolescents ages 419 (NHANES III [198894], CDC):
- Females have significantly higher average total cholesterol and low-density lipoprotein (LDL) cholesterol (bad cholesterol) than do males.
- NH black children and adolescents have significantly higher mean total cholesterol, LDL (bad) cholesterol and HDL (good) cholesterol levels when compared with NH white and Mexican-American children and adolescents.
- Among children and adolescents ages 419, the mean total blood cholesterol level is 165 mg/dL. For boys, its 163 mg/dL and for girls, its 167 mg/dL. The racial/ethnic breakdown is (NHANES III [198894], CDC/NCHS):
- For NH whites, 162 mg/dL for boys and 166 mg/dL for girls.
- For NH blacks, 168 mg/dL for boys and 171 mg/dL for girls.
- For Mexican Americans, 163 mg/dL for boys and 165 mg/dL for girls.
- About 10% of adolescents ages 1219 have total cholesterol levels exceeding 200 mg/dL (NHANES III [198894], CDC/NCHS).
Adults
- BRFSS data from 19912003 showed the prevalence of cholesterol screening during the preceding 5 years increased from 67.3% in 1991 to 73.1% in 2003. The age-standardized prevalence of high blood cholesterol awareness among persons screened increased from 25.3% in 1991 to 31.1% in 2003.231
- A 10% decrease in total cholesterol levels (population-wide) may result in an estimated 30% reduction in the incidence of CHD.232
- Data from NHANES 19992002 showed that overall, 63.3% of participants whose test results indicated high blood choleserol or who were taking a cholesterol-lowering medication had been told by a professional that they had high cholesterol. Women were less likely than men to be aware of their condition; blacks and Mexican Americans were less likely to be aware of their condition than whites. Less than half of Mexican Americans with high cholesterol were aware of their condition.233
- Between 198894 and 19992002, the age-adjusted mean total serum cholesterol level of adults age 20 and over decreased from 206 mg/dL to 203 mg/dL and LDL cholesterol levels decreased from 129 mg/dL to 123 mg/dL.234
Adherence
Based on data from the Third Report of the Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults235:
- Less than half of persons who qualify for any kind of lipid-modifying treatment for CHD risk reduction are receiving it.
- Less than half of even the highest-risk persons, those who have symptomatic CHD, are receiving lipid-lowering treatment.
- Only about a third of treated patients are achieving their LDL goal; less than 20% of CHD patients are at their LDL goal.
LDL (Bad) Cholesterol
Youth
- Mean LDL cholesterol levels among children and adolescents ages 1219 are (NHANES III [198894], CDC/NCHS):
- Among NH whites, 91 mg/dL for boys and 100 mg/dL for girls.
- Among NH blacks, 99 mg/dL for boys and 102 mg/dL for girls.
- Among Mexican Americans, 93 mg/dL for boys and 92 mg/dL for girls.
Adults
- The mean level of LDL cholesterol for American adults age 20 and older is 123 mg/dL. Levels of 130159 mg/dL are considered borderline high. Levels of 160189 mg/dL are classified as high, and levels of 190 mg/dL and higher are very high.234
- According to NHANES 19992002
- Among NH whites, the mean LDL cholesterol level was 126 mg/dL for men and 121 mg/dL for women.
- Among NH blacks, the mean LDL cholesterol level was 121 mg/dL for both men and women.
- Among Mexican Americans, the mean LDL cholesterol level was 125 mg/dL for men and 117 mg/dL for women.
HDL (Good) Cholesterol
The higher a persons HDL cholesterol level is, the better. A level of less than 40 mg/dL in adults is considered low HDL cholesterol, which is a risk factor for heart disease and stroke.
Youth
- Mean HDL cholesterol levels among children and adolescents ages 419 are (NHANES III [198894], CDC/NCHS):
- Among NH whites, 48 mg/dL for boys and 50 mg/dL for girls.
- Among NH blacks, 55 mg/dL for boys and 56 mg/dL for girls.
- Among Mexican Americans, 51 mg/dL for boys and 52 mg/dL for girls.
Adults
- The mean level of HDL cholesterol for American adults age 20 and older is 51.3 mg/dL.234
- According to NHANES 19992002
- Among NH whites, the mean HDL cholesterol level was 45.5 mg/dL for men and 52.9 for women.
- Among NH blacks, the mean HDL cholesterol level was 51.0 mg/dL for men and 57.3 for women.
- Among Mexican Americans, the mean HDL cholesterol level was 45.0 mg/dL for men and 52.9 for women.
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Physical Activity
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See
Tables 9D and 9E.
Prevalence
Youth
- In 2003, 58.5% of male and 52.8% of female high school students, grades 912, were enrolled in physical education (PE) classes. Among these students, 30.5% of males and 26.4% of females attended classes daily and 84.5% of males and 75.3% of females exercised or played sports during an average PE class.237
- 2002 data from the Youth Media Campaign Longitudinal Study (YMCLS) of the CDC showed that 61.5% of children ages 913 dont participate in any organized physical activity (PA) during their nonschool hours and that 22.6% dont engage in any free-time PA. NH black and Hispanic children are significantly less likely than NH white children to report involvement in organized activities, as are children with parents who have lower incomes and education levels.239
- By the age of 16 or 17, 31% of white girls and 56% of black girls report no habitual leisure-time activity.240
- Lower levels of parental education are associated with greater decline in activity for white girls at both younger and older ages. For black girls, this association is seen only at the older ages.
- Cigarette smoking is associated with decline in activity among white girls. Pregnancy is associated with decline in activity among black girls but not among white girls.
- A higher BMI is associated with greater decline in activity among girls of both races.
Adults
- 20012003 data from the BRFSS study of the CDC showed that among Asians and Native Hawaiians or Other Pacific Islanders, 21.2% of men and 27.0% of women reported no leisure-time PA. Of these, 21.5% were overweight (BMI 25.029.9) and 23.8% were obese (BMI 30.0 and over).241
- 2004 data from the BRFSS study of the CDC showed that 77.1% of respondents had participated in any PA in the past month. Of these, the median percentage that were male was 79.2, and 74.8% were female; 79.7% were white, 66.1% were black, and 61.5% were Hispanic (CDC Web site).
- Based on data from the 19992001 NHIS survey of the CDC/NCHS242...
- 31.3% of US adults age 18 and older engage in any regular leisure-time PA.
- Men (64.2 %) were more likely than women (59.0%) to engage in at least some leisure-time PA.
- Engaging in any PA declined steadily with age from 39.7% of adults ages 1824 to 15.6% age 75 and older.
- Engaging in any regular leisure-time PA was more prevalent among white adults (32.7%) than among Asian adults (27.8%) and black adults (23.9%).
- NH white adults (65.7%) were more likely than NH black adults (49.3%) and Hispanic adults (45.0%) to engage in at least some leisure-time PA.
- Adults with a graduate degree (80.6%) were about twice as likely as adults with less than a high school diploma (41.0%) to engage in at least some leisure-time PA.
- Adults who had incomes 4 times the poverty level or more (39.9%) were about twice as likely as adults with incomes below the poverty level (22.6%) to engage in any regular PA.
- Widowed adults (23.6%) were less likely than never-married adults (33.0%), married adults (31.1%), and divorced or separated adults (29.1%) to engage in regular PA.
- Adults living in the West (65.3%) were more likely than adults living in the South (56.4%) to engage in at least some leisure-time PA.
- The relative risk of CHD associated with physical inactivity ranges from 1.52.4, an increase in risk comparable to that observed for high blood cholesterol, HBP or cigarette smoking.243
- A study of over 72 000 female nurses indicates that moderate-intensity PA such as walking is associated with a substantial reduction in risk of total and ischemic stroke.98
- The prevalence of physical inactivity during leisure time among Mexican Americans is higher than in the general population.244
- The prevalence of physical inactivity among those whose main language is English is 15% of men and 28% of women. This is similar to that of the general population (17% of men and 27% of women).
- Those whose main language is Spanish have the highest prevalence of physical inactivity (38% of men and 58% of women).
- Data from the 19992003 NHIS study of the CDC/NCHS showed that American-Indian or Alaska Native (AIAN) adults, age 18 and older, were as likely (50.3%) as black adults (49.9%) and more likely than Asian adults (38.1%) and white adults (36.6%) to never engage in any leisure-time PA.150
Cost
- The annual estimated direct medical cost of physical inactivity in 2000 was $76.6 billion (www.cdc.gov).
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Overweight and Obesity
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See
Table 9F.
Prevalence
Youth
- An estimated 9.2 million children and adolescents ages 619 are considered overweight or obese, based on the 95th percentile or higher of BMI values in the 2000 CDC growth chart for the United States (NHANES [19992002], CDC/NCHS).
- Based on data from NHANES (19992002), the prevalence of overweight in children ages 611 increased from 4.2% to 15.8% compared with data from 196365. The prevalence of overweight in adolescents ages 1219 increased from 4.6% to 16.1% (CDC/NCHS).
- Over 10% of preschool children ages 25 are overweight, up from 7% in 1994.245
- Among preschool children, the following are overweight: 8.6% of NH whites, 8.8% of NH blacks and 13.1% of Mexican Americans.
- Among children ages 611, the following are overweight: 13.5% of NH whites, 19.8% of NH blacks and 21.8% of Mexican Americans.
- Among adolescents ages 1219, the following are overweight: 13.7% of NH whites, 21.1% of NH blacks and 22.5% of Mexican Americans.
- In addition, the data show that another 31% of children and teens ages 619 are considered at risk of becoming overweight (BMI from the 85th95th percentile).
- 43% of adolescents watch more than 2 hours of television each day. Overweight adolescents have a 70% chance of becoming overweight adults. This increases to 80% if 1 or both parents are overweight or obese (www.surgeongeneral.gov).
- Data from the YRBS 2003 survey showed that the prevalence of being overweight was higher among black (16.2%) and Hispanic (16.4%) than white (10.4%) students; higher among black female (14.2%) and Hispanic female (11.5%) than white female (6.5%) students; and higher among black male (18.2%) and Hispanic male (21.3%) than white male (14.0%) students. The prevalence of being at risk for overweight was higher among black (18.2%) and Hispanic (17.4%) than white (13.3%) students; higher among black female (21.2%) than white female (12.4%) and Hispanic female (15.7%) students; and higher among Hispanic male (19.1%) and black male (15.1%) than white male (14.0%) students.246
- Among all overweight children and teens ages 219 (or their parents), 36.7% reported ever having been told by a doctor or healthcare professional that they were overweight. For ages 25, 17.4%; for ages 611, 32.6%; for ages 1215, 39.6%; and for ages 1619, 51.6% were told that they were overweight. Similar trends were seen for males and females. Among racial/ethnic populations, overweight NH black females were significantly more likely to be told that they were overweight than NH white females (47.4% versus 31.0%). Among those informed of overweight status, 39% of NH black females were severely overweight compared with 17% of NH white females.247
Adults
- Analysis of the FHS, 19712001, showed the 4-year rates of developing overweight varied from 1419% in women and 2630% in men. Four-year rates of developing obesity were from 57% in women and 79% in men. The 30-year risk was similar for both sexes; with some variation by age. Overall, the 30-year risk exceeded 1 in 2 persons for "overweight or more," 1 in 4 for obesity, and 1 in 10 for stage II obesity (BMI 30), across different age groups. The 30-year estimates correspond to the lifetime risk for overweight or more or obesity for participants 50 years of age.248
- The age-adjusted prevalence of overweight increased from 55.9% in NHANES III (198894) to 65.1% in NHANES (19992002). The prevalence of obesity also increased during this period from 22.9% to 30.4%. Extreme obesity (BMI of 40.0 or higher) increased from 2.9% to 4.9%.245
- Since 1993, the prevalence of those who are obese increased over 61%. Among states in 2002, West Virginia had the highest rate of obesity and Colorado had the lowest (www.cdc.gov/brfss).
- Data from the BRFSS study of the CDC showed that in participants ages 1824, studied from 19902000, obesity increased among every ethnic group, especially in black women. Almost 20% of black women were obese by ages 1824, increasing to over 35% by ages 2544. Between one-third and one-half of those surveyed ate fewer than 3 servings of fruits and vegetables a day, although older black men and older Hispanic men and women improved dramatically in that regard between 1990 and 2000.23
- Abdominal obesity is an independent risk factor for ischemic stroke in all race/ethnic groups with an odds ratio (OR) about 3 times greater when comparing the first and fourth quartiles. This effect was larger for those under age 65 (OR=4.4) than over age 65 (OR=2.2). (NOMASS).249
- A recent comparison of risk factors in both the HHP and FHS showed a BMI increase of around 3 kg/m2 raised the risk of hospitalized thromboembolic stroke by 1030%.251
- In 199899, surveys of people in 8 states and the District of Columbia by the BRFSS study of the CDC indicated that obesity rates are significantly higher among people with disabilities, especially blacks and those ages 4564.252
- Data from the FHS showed that overweight and obesity were associated with large decreases in life expectancy. Forty-year-old female nonsmokers lost 3.3 years and 40-year-old male nonsmokers lost 3.1 years of life expectancy because of overweight. In 40-year-old nonsmokers, females lost 7.1 years and males lost 5.8 years due to obesity. Obese female smokers lost 7.2 years and obese male smokers lost 6.7 years when compared to normal-weight nonsmokers.253
- Data from the 19992003 NHIS study of the CDC/NCHS showed that American Indian or Alaska Native (AIAN) adults, age 18 and older, were as likely (30.4%) as black adults (30.8%) and less likely than white adults (40.9%) and Asian adults (62.8%) to be at a healthy weight.150
- Data from the 19992003 NHIS study of the CDC/NCHS showed that American Indian or Alaska Native (AIAN) women, age 18 and older, were less likely (29.4%) than black women (36.6%) and more likely than white women (20.3%) and Asian women (5.8%) to be obese.150
- According to the WHO, the number of overweight and obese people worldwide is set to increase to 1.5 billion by 2015 if current trends continue. Excessive weight and obesity are major risk factors for CVD, the No. 1 cause of death worldwide, claiming more than 17 million lives a year.254
Mortality
Obesity was associated with nearly 112 000 excess deaths (95% confidence interval [CI], 53 754170 064) and underweight with nearly 34 000 excess deaths (95% CI, 15 72651 766).255
Risk Factors
- Among people diagnosed with type 2 diabetes, 67% have a BMI 27 and 46% have a BMI 30. An estimated 70% of diabetes risk in the United States can be attributed to excess weight (win.niddk.nih.gov).
- The age-adjusted prevalence of hypertension in overweight US adults is 22.1% for men with BMI >25 and <27; 27.0% for men with BMI 27 and <30; 27.7% for women with BMI 25 and <27; and 32.7% for women with BMI 27 and <30. In comparison, the prevalence in adults who are obese (BMI 30) is 41.9% for men and 37.8% for women (win.niddk.nih.gov/statistics).
- The age-adjusted prevalence of high blood cholesterol (240 mg/dL) in overweight US adults is 19.1% for men with BMI 25 and <27; 21.6% for men with BMI 27 and <30; 30.5% for women with BMI 25 and <27; and 29.6% for women with BMI 27 and <30. In comparison, the prevalence of high cholesterol in adults who are not overweight (BMI <25) is 13.0% for men and 13.4% for women. The prevalence for adults who are obese (BMI 30) is 22.0% for men and 27.0% for women (win.niddk.nih.gov/statistics).
Cost
- Among children and adolescents, annual hospital costs related to obesity were $127 million during 199799. (CDC. "Preventing Obesity and Chronic Diseases Through Good Nutrition and Physical Activity"256)
- The estimated cost of overweight and obesity, in 2001 dollars, is $117 billion. Direct cost is $61 billion and the indirect cost is $56 billion. The direct cost of heart disease related to overweight and obesity, independent of stroke, is $8.8 billion. For type 2 diabetes, its $98 billion. For hypertension, its $4.1 billion. The cost of lost productivity related to obesity (BMI >30) among Americans ages 1764 is $3.9 billion (www.win.niddk.nih.gov).
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Diabetes Mellitus
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(ICD/9 250) (ICD/10 E10E14). See
Table 9G.
Prevalence
- The prevalence of diabetes increased by 8.2% from 200001. Since 1990, the prevalence of those diagnosed with diabetes increased 61%. In 2001, Alabama had the highest rate of diagnosed diabetes (10.5%) and Minnesota had the lowest (5.0%).257
- From 19942002, the age-adjusted prevalence of diabetes increased 54.0% for US adults (from 4.8% to 7.3%), and increased 33.2% (from 11.5% to 15.3%) among American Indian or Alaska Native adults. The overall age-adjusted prevalence for American Indian or Alaska Native adults was more than twice that of US adults overall.258
- Based on data from the NHANES studies of the CDC/NCHS, in 197680, total diabetes prevalence in African Americans ages 4074 was 8.9%; in 198894 the rate was 18.2%, a doubling of the rate in just 12 years. In 198894, among people ages 4074, the prevalence rate was 18.2% for African Americans compared to 11.2% for whites.259
- Data from the NHANES (19992000) study of the CDC/NCHS showed a disproportionately high prevalence of diabetes in NH blacks and Mexican Americans when compared to NH whites. For previously diagnosed diabetes the percentage was 11.7 for NH blacks and 9.6 for Mexican Americans compared to 4.8 for NH whites. For undiagnosed diabetes the percentages were 3.2, 2.4 and 2.6, respectively. For impaired fasting glucose the percentages were 6.3, 6.7 and 5.7, respectively.260
- BRFSS data in selected areas, 19982002, showed that diabetes disproportionately affects Hispanics in the United States and Puerto Rico. Hispanics were twice as likely to have diabetes as NH whites of similar age (9.8% versus 5.0%). This disparity, however, varied by geographic locationit was lowest in Florida and higher in California, Texas, and Puerto Rico. Among Hispanic adults in California, Florida, Illinois, New York/New Jersey, Puerto Rico and Texas, the overall prevalence of diabetes was 7.4%; it ranged from 6.2% in Illinois and New York/New Jersey to 9.3% in Puerto Rico.261
- About 15% of American Indians or Alaska Natives who receive care from the Indian Health Service have been diagnosed with diabetes. On average, American Indians or Alaska Natives are 2.6 times as likely to have diagnosed diabetes as NH whites of the same age (niddk.nih.gov, 2004).
- The prevalence of diabetes for all age groups worldwide was estimated to be 2.8% in 2000 and a projected 4.4% in 2030. The total number of people with diabetes is projected to rise from 171 million in 2000 to 366 million in 2030.262
- Type 2 diabetes may account for 9095% of all diagnosed cases of diabetes (niddk.nih.gov, 2004).
- In April 2004, the USDHHS announced that about 40% of US adults ages 4074, or 41 million, currently have pre-diabetes, a condition that raises a persons risk of developing type 2 diabetes, heart disease and stroke. Many dont know that they are at risk or that they have pre-diabetes.263
Incidence
- In the United States each year, over 13 000 children are diagnosed with type 1 diabetes. Increasingly, healthcare providers are finding more and more children and teens with type 2 diabetes. Some clinics report that one-third to one-half of all new cases of childhood diabetes are now type 2. African-American, Hispanic or Latino and American Indian children who are obese and have a family history of type 2 diabetes are at especially high risk for this type of diabetes (niddk.nih.gov, 2004).
Mortality
Mortality as an underlying or contributing cause of death224 100.
- The 2003 overall death rate from diabetes was 25.2. Death rates were 26.8 for white males, 50.5 for black males, 20.0 for white females and 47.3 for black females.
- At least 65% of people with diabetes mellitus die of some form of heart or blood vessel disease.264
- Heart disease death rates among adults with diabetes are 24 times higher than the rates for adults without diabetes (diabetes.niddk.nih.gov).
- Death rates for people with diabetes are 27% higher for African Americans compared with whites (niddk.nih.gov, 2004).
Aftermath
- The age-adjusted prevalence of major CVD for women with diabetes is twice that for women without diabetes, and the age-adjusted major CVD hospital discharge rate for women with diabetes is almost 4 times the rate for women without diabetes.265
- A population-based study of over 13 000 men and women in Denmark showed that in people with type 2 diabetes, the RR of first, incident and admission for MI was increased 1.54.5-fold in women and 1.52-fold in men. The RR of first, incident and admission for stroke was increased 26.5-fold in women and 1.52-fold in men, with a significant difference between the sexes. In both men and women the RR of death was increased 1.52 times.266
- Diabetes increases the risk of stroke, with the RR ranging from 1.8 to almost 6.0.267
- Ischemic stroke patients with diabetes are younger, more likely to be African American and more likely to have hypertension, MI, and high cholesterol than nondiabetic patients. Diabetes increases ischemic stroke incidence at all ages, but this risk is most prominent before age 55 in African Americans and before age 65 in whites.95
- Compared with white women, black women have a 138% higher rate of ambulatory medical care visits for diabetes.268
- Based on data from the CDC Diabetes Surveillance System, 19972000:
- In 2000, the age-standardized prevalence of any self-reported cardiovascular condition among persons with diabetes age 35 and older was 37.5% for white men, 32.2% for white women, 31.4% for black men, 34.0% for black women, 23.9% for Hispanic men and 22.9% for Hispanic women.
- In 2000, the self-reported prevalence of any cardiovascular condition was 28.8 per 100 diabetic population among persons ages 3564, 45.7 per 100 diabetic population among persons ages 6574, and 53.5 per 100 diabetic population among persons age 75 and older.
- In 2000, among persons with diabetes age 35 and older, 37.2% reported being diagnosed with a cardiovascular condition, (ie, CHD, stroke or other cardiovascular condition).
- In 2000, among persons with diabetes age 35 and older, the age-standardized prevalence of self-reported CHD, angina or heart attack, was almost 3 times that of self-reported stroke (22.1% versus 8.0%).
- In 2000, 4.4 million persons age 35 and older with diabetes reported being diagnosed with a cardiovascular condition, 2.9 million were diagnosed with CHD (ie, self-reported CHD, angina or heart attack) and 1.1 million reported being diagnosed with a stroke.
- Approximately one-third of adults with diabetes received all 5 interventions recommended for comprehensive diabetes care in 2001. The proportion receiving all 5 interventions was lower among blacks compared with whites and among Hispanics compared with NH whites (2004 National Healthcare Disparities Report, AHRQ, USDHHS).
- The difference in hospital admissions for long-term complications between men and women is highly significant, with women 22% less likely than men to be admitted (2004 National Healthcare Disparities Report, AHRQ, USDHHS).
- In multivariate models controlling for age, gender, income, education, insurance and residence location, blacks were 38% less likely, and Hispanics were 33% less likely than their respective comparison groups to receive all services in 2001 (2004 National Healthcare Disparities Report, AHRQ, USDHHS).
Risk Factors
- Among US adults with diabetes, data from the NHANES surveys from 197174 to 19992000 showed that mean total cholesterol declined from 5.95 mmol/liter to 5.48 mmol/liter. The proportion with high cholesterol decreased from 72% to 55%. Mean blood pressure declined from 146/86 mm Hg to 134/72 mm Hg. The proportion with HBP decreased from 64% to 37%, and smoking prevalence decreased from 32% to 17%. Although these trends are encouraging, still 1 of 2 people with diabetes had high cholesterol, 1 of 3 had HBP, and 1 of 6 was a smoker.269
- Data from the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) of the NIH stated:
- Heart disease is the leading cause of diabetes-related death. Adults with diabetes have heart disease death rates about 24 times higher than adults without diabetes.
- The risk for stroke is 24 times higher among people with diabetes.
- About 73% of adults with diabetes have BP greater than or equal to 130/80 mm Hg or use prescription medication for hypertension.
- An estimated 4969 million adults in the United States may have insulin resistance (personal communication with Earl Ford, MD, CDC/NCHS, 2003), and 1 in 4 of them will develop type 2 diabetes (ndep.nih.gov).
Cost
In 2002, the direct and indirect cost of diabetes was $132 billion.270
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10. Metabolic Syndrome
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Adolescents
The prevalence of metabolic syndrome (MetS) among 1219-year-old
US adolescents was estimated in an analysis of NHANES III data,
by applying a modification of the ATP III definition (Third
Report of the National Cholesterol Education Program [NCEP]
Expert Panel on Detection, Evaluation, and Treatment of High
Blood Cholesterol in Adults [ATP III, NHLBI]) for adults. MetS
during adolescence was defined as 3 or more of the following
abnormalities:
- Serum triglyceride level of 110 mg/dL or higher.
- High-density lipoprotein (HDL) cholesterol level of 40 mg/dL or lower.
- Elevated fasting glucose of 110 mg/dL or higher.
- Blood pressure at or above the 90th percentile for age, sex and height.
- Waist circumference at or above the 90th percentile for age and sex (NHANES III data set)
- An estimated 1 million 1219-year-old adolescents in the United States have MetS, or 4.2% overall (6.1% of males and 2.1% of females).272
- Of adolescents with MetS, 73.9% were overweight and 25.2% were at risk of overweight.
- The mean BMI of adolescents with the MetS (30.1%) was just above the 95th percentile of the CDC Growth Chart; thus they are likely to represent a fairly common clinical problem in pediatrics.
- MetS was present in 28.7% of overweight adolescents (BMI 95th percentile of CDC Growth Chart) compared with 6.8% of at-risk-of-overweight adolescents, and 0.1% of those with BMI below the 85th percentile (P<0.001).
- Among adolescents with MetS, 40.9% had 1 criterion; 14.2% had 2 criteria; 4.2% had 3 criteria and 0.9% had 4 criteria for MetS. For overweight adolescents, 88.5% had 1 criterion; 54.4% had 2 criteria; 28.7% had 3 criteria and 5.8% had 4 criteria for MetS.
- Among more than 3400 children examined in 1 study, 1 in 10 had MetS.273
- Using a sample of adolescents from NHANES III, the overall prevalence of MetS was 38.7% in moderately obese subjects and 49.7% in severely obese subjects. The prevalence of MetS in severely obese black subjects was 39%.274
Adults
People with MetS are at increased risk for developing diabetes and cardiovascular disease as well as increased mortality from CVD and all causes. Unless otherwise stated, the following data are based on the definition of the metabolic syndrome as determined in the Third Report of the National Cholesterol Education Program (NCEP) Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults (ATP III, NHLBI).
- An estimated 47 million US residents have MetS.275
- The age-adjusted prevalence of MetS for adults is 23.7%.275
- The prevalence ranges from 6.7% among people ages 2029 to 43.5% for ages 6069 and 42.0% for those age 70 and older.
- The age-adjusted prevalence is similar for men (24.0%) and women (23.4%).
- Mexican Americans have the highest age-adjusted prevalence of MetS (31.9%). The lowest prevalence is among whites (23.8%), African Americans (21.6%) and people reporting an "other" race or ethnicity (20.3%).
- Among African Americans, women had about a 57% higher prevalence than men. Among Mexican Americans, women had a 26% higher prevalence than men did.
- The prevalences of people with MetS are 24.3%, 13.9% and 20.8 % for white, black and Mexican-American men, respectively. For women the percentages are 22.9, 20.9 and 27.2, respectively.276
- In a study of over 15 000 men and women, ages 4564, in the ARIC study, MetS prevalence was 30% and 27% using ATP III and modified WHO definitions with substantial variation across race and gender subgroups. CHD prevalence was greater in those with than without MetS (ATP III 7.4% versus 3.6%; WHO 7.8% versus 3.6%, both P<0.0001). Using either definition, subjects with MetS were about 2 times more likely to have prevalent CHD than those without the syndrome after adjustment for established risk factors. Among individuals free of CVD, the average age, sex, and race/center-adjusted intima-media thickness (IMT) was greater among individuals with the syndrome (ATP III 747 versus 704, WHO 750 versus 705 micrometers, both P<0.0001). These data suggest that MetS was significantly associated with the presence of CHD and carotid IMT.277
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11. Nutrition
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See
Table 11A.
- The Economic Research Service of the USDA suggests that the average daily calorie consumption in the United States increased by 12% between 1985 and 2000, or roughly 300 calories. Of that increase, grains (mainly refined grains) accounted for 46%, added fats 24%, added sugars 23%, fruits and vegetables 8%, and the meat and dairy groups together declined 1%. Per capita availability of total dietary fat, after remaining steady from 198599, jumped 6% in 2000. American diets tend to be low in whole grains and other nutritious foods.279
- Between 1965 and 1991, among US adults age 18 and older, total daily calories declined from 2049 to 1807, but then rebounded to 2000 calories in 1996. This contributed to the marked increase in obesity levels in the past decade.280
- In 19992000, among children ages 26, 20% had a good diet, 74% had a diet that needed improvement, and 6% had a poor diet. For those ages 712, 8% had a good diet, 79% had a diet that needed improvement, and 13% had a poor diet.281
- Between 198894 and 19992000, the median caloric intake rose in boys ages 811 and 1219. It rose a small amount in girls ages 611 and basically remained constant in girls ages 1219.282
- Between 1977 and 1996, portion sizes for key food groups grew markedly in the United States, not only at fast-food outlets but also in homes and at conventional restaurants. One study of portion sizes for typical items showed that:
- Salty snacks increased from 132 calories to 225 calories.
- Soft drinks increased from 144 calories to 193 calories.
- French fries increased from 188 calories to 256 calories.
- Hamburgers increased from 389 calories to 486 calories.283
Fat/Meat Consumption
- Between 1965 and 1996 among adults, total fat as a proportion of daily calorie intake fell steadily from 39.1% to 33.1%. Saturated fat fell from 14.4% to 11.0%. However, total calorie intake increased between 1991 and 1996. Over the same period daily total fat consumption rose from 70.9 grams (g) to 74.8 g.280
- The average daily intake of total fat in the United States is 81.4 grams (96.5 g for males and 67.3 g for females) (NHANES III [198894], CDC/NCHS).
- For NH whites the average is 82.7 g (99.0 g for males and 67.4 g for females).
- For NH blacks the average is 82.0 g (94.6 g for males and 71.2 g for females).
- For Mexican Americans the average is 77.6 g (88.0 g for males and 66.5 g for females).
- The average daily intake of saturated fat in the United States is 27.9 g (33.1 g for males and 23.0 g for females) (NHANES III [198894], CDC/NCHS).
- For NH whites the average is 28.4 g (34.1 g for males and 23.1 g for females).
- For NH blacks the average is 27.5 g (31.7 g for males and 23.8 g for females).
- For Mexican Americans the average is 26.7 g (30.1 g for males and 23.1 g for females).
- The proportion of fat calories from beef, pork, dairy products and eggs fell from 50% in 1965 to 33% in 199496. The proportion of fat calories from poultry increased from 4% to 7%. Calories from fruits and vegetables rose from 8% to 13%.280
- In 199496, pizza, Mexican food, Chinese food, hamburgers, French fries and cheeseburgers accounted for 10.8% of total fat intake. These 6 foods accounted for only 1.9% of fat intake in 1965.280
- The major sources of saturated fat in the diet are red meat, butter, whole milk and eggs. Intake of these foods has fallen markedly since 1965. The decline in whole milk consumption from 21.3 gallons in 197276 to 8.2 gallons in 1997 accounts for most of the reduction in saturated fat.280
- According to USDA data, in 2001 total meat consumption (red meat, poultry and fish) amounted to 194 pounds per person, 16 pounds above the level in 1970. Each American consumed an average of 21 pounds less red meat (mostly beef) than in 1970, 34 pounds more poultry and 3.4 pounds more fish.279
Cholesterol
- The average daily intake of dietary cholesterol in the United States is 269.6 milligrams (mg). For males its 323.5 mg and for females its 218.9 mg (NHANES III [198894], CDC/NCHS).
- For NH whites the average is 259.3 mg (312.6 mg for males and 209.1 mg for females).
- For NH blacks the average is 297.9 mg (358.8 mg for males and 245.6 mg for females).
- For Mexican Americans the average is 316.2 mg (365.9 mg for males and 263.8 mg for females).
Fiber
- The recommended daily intake of dietary fiber is 25 g or more. Americans consume a daily average of 15.6 g of dietary fiber (17.8 g for males and 13.6 g for females) (NHANES III [198894], CDC/NCHS).
- For NH whites the average is 15.8 g (18.1 g for males and 13.7 g for females).
- For NH blacks the average is 13.4 g (15.0 g for males and 12.0 g for females).
- For Mexican Americans the average is 18.5 g (21.0 g for males and 15.9 g for females).
- Analysis of participants in the Cardiovascular Health Study (CHS) showed that cereal fiber consumption late in life was associated with lower risk of incident CVD, supporting recommendations for elderly people to increase consumption of dietary cereal fiber.284
- Despite USDA Food Pyramid recommendations to consume several daily servings of whole grains, in 199496, intake of whole grains for children was 1 serving or less.285
- Most Americans consume less than 1 serving of whole grains a day, but between the early 1980s and 2000, consumption of refined grains increased. (Refined grains include white, whole wheat and durum flour, all of which have less nutritional value than whole grains).282
Fruits/Vegetables
- In 2000, 81% of men and 73% of women reported eating fewer than 5 servings of fruits and vegetables a day. More than 60% of young people eat too much fat, and less than 20% eat the recommended 5 or more servings of fruits and vegetables each day (CDC, BRFSS, 2000).
- Only 22.7% of adults consumed fruits and vegetables at least 5 times a day in 1996. This was an increase from 19.0% in 1990 (BRFSS [199096], CDC).
- The highest proportion of adults who consumed fruits and vegetables at least 5 times a day were those age 65 and older, whites, college graduates, those actively engaged in leisure-time physical activity, and nonsmokers.280
- The percentage of males who consumed fruits and vegetables at least 5 times a day was 17.7 in 2003. For females the percentage was 27.0 (BRFSS 2003, CDC).
- From 199096, the percentage of obese adults who consumed at least 5 servings of fruits and vegetables a day dropped from 16.8% to 15.4%.280
- Recent studies support the intake of up to 9 servings of fruits and vegetables per day.286
- In 2003, the percentage of students in grades 912 who reported eating fruits and vegetables 5 or more times per day was 23.6% for males and 20.3% for females.287
- Black students (24.5%) were more likely than white students (20.2%) to have eaten 5 or more servings per day. This racial/ethnic difference was significantly higher for male students.
- From 199496 for children ages 619, only 14% met then-current USDA Food Pyramid recommendations for daily fruit intake (24 servings per day). Only 20% got enough vegetables (35 servings per day).288
- In 1980, about 50% of high school seniors reported eating green vegetables "nearly every day or more." By 2003, that figure had dropped to about 30%.289
Costs
Each year over $33 billion in medical costs and $9 billion in lost productivity due to heart disease, cancer, stroke and diabetes are attributed to diet (CDC).
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12. Quality of Care
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The Institute of Medicine defines quality of care as "the degree
to which health services for individuals and populations increase
the likelihood of desired health outcomes and are consistent
with current professional knowledge."
290
This section of the Update highlights national data on quality of care for several cardiovascular conditions. It is intended to serve as a benchmark for current care and to stimulate efforts to improve the quality of cardiovascular care nationally. Where possible, data is reported from standardized quality indicators (ie, those consistent with the methods for quality performance measures endorsed by the American College of Cardiology and American Heart Association291 Additional data on aspects of quality of care such as compliance with ACC/AHA clinical practice guidelines is also included to provide a spectrum of quality-of-care data.
Other
- Nearly 3800 patient medical records from 38 US hospitals showed that among patients with AF and at high risk for stroke, only 54.7% received warfarin sodium, and 20.6% received neither aspirin nor warfarin. Of patients with AMI, only 75.5% received aspirin on hospital arrival. After orthopedic surgery procedures, only 85.6% received prophylaxis with a parenteral anticoagulant agent or warfarin. In 49.4% of patients with DVT, PE, or both, unfractionated or low-molecular-weight heparin use was discontinued before an international normalized ratio of 2.0 or greater was achieved for 2 consecutive days. Patients with DVT or PE were rarely discharged from the hospital with bridge therapy (an injectable anticoagulant agent plus warfarin), although the length of hospitalization was significantly shorter than if discharged taking warfarin alone.294
- During the 7-year study period of data from all managed care plans administered by Medicare, clinical performance improved on all measures for both white and black enrollees. However, racial disparities did not decrease for glucose control among patients with diabetes or for cholesterol control among patients with cardiovascular disorders.295
- Using Medicare data from 19922001, the rates of receipt for 9 surgical procedures previously shown to have disparities in the rates at which they were performed in white and black patients, was examined. The rates of receipt for all 9 procedures were higher among whites than blacks. The difference between the rates among whites and blacks increased significantly between 1992 and 2001 for 5 of the 9 procedures, remained unchanged for 3 procedures, and narrowed significantly for 1 procedure. Rates of CABG, carotid endarterectomy and total hip replacement in 158 hospital-referral regions were examined. In the early 1990s, whites had higher rates for these procedures than blacks in every hospital-referral region. By 2001, the disparity in the rates of these procedures narrowed significantly in 22 hospital-referral regions, widened significantly in 42, and was not significantly changed in the remaining regions. At the end of the study period, no hospital-referral region was found in which the difference in rates between whites and blacks was eliminated for men or women with regard to any of those 3 procedures.296
- Using data from 19942002 from the National Registry of Myocardial Infarction (NRMI), sex and racial differences in the treatment of patients deemed to be "ideal candidates" for particular treatments, and differences in deaths among 598 911 patients hospitalized with MI were examined. It was found that rates of reperfusion therapy, coronary angiography, and in-hospital death after MI, but not the use of aspirin and beta-blockers, vary according to race and sex, with no evidence that the differences have narrowed in recent years.297
Care Centers/Personnel
- Based on data from the American Board of Psychiatry and Neurology (ABPN), there are 240 board-certified vascular neurologists (August 2005).
- In 2002, there were 16 989 doctors of medicine with a specialty of cardiovascular diseases (Health, United States, 2004. CDC/NCHS).
- As of Sept. 28, 2005, there were 175 total certified primary stroke centers by JCAHO standards.
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13. Medical Procedures
|
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Cardiac Catheterization
- From 19792003, the total number of inpatient cardiovascular operations and procedures increased 470%.
- From 19792003, the number of cardiac catheterizations increased 373%.
- An estimated 1 414 000 inpatient cardiac catheterizations were performed in 2003.
- The mean charge for patients hospitalized for diagnostic cardiac catheterization increased from $11 611 in 1993 to $24 893 in 2003. The total number of patients increased from 628 962 to 728 786, while the average length of stay decreased from 4.9 days to 3.7 days.298
Coronary Artery Bypass Surgery
In the United States in 2003, the NCHS estimates that 467 000 of these procedures were performed on 268 000 patients.
- Compared with Canadian patients, US patients were older, more likely to be female, and discharged from the hospital sooner. In-hospital costs of treatment were substantially higher in the United States than in Canada. After controlling for demographic and clinical differences, length of stay in Canada was 16.8% longer than in the United States; there was no difference in in-hospital mortality; and the cost in the United States was 82.5% higher than in Canada.299
Heart Transplants
In 2004, 2016 heart transplants were performed in the United States. There are 309 organ transplant centers in the United States, 186 of which perform heart transplants.
- In the United States, 72.6% of heart transplant patients are male, 70.4% are white, 20.0% are ages 3549, and 46.1% are ages 5064.
- As of July 15, 2005, the 1-year survival rate for males was 86.4% and for females it was 84.6%; the 3-year rate was 78.9% for males and 76.1% for females, and the 5-year rate was 72.2% for males and 68.5% for females.
- As of July 15, 2005, there were 3142 heart patients on the transplant waiting list.
Percutaneous Coronary Intervention (PCI, previously referred to as PTCA)
- An estimated 664 000 PCI procedures were performed on 652 000 patients in 2003 in the United States. From 19872003, the number of procedures increased 326%.
- In 2003, 65% of PCI procedures were performed on men, and 52% were performed on people age 65 and older.
- The rate of coronary stent insertion increased 147% between 1996 and 2000. Among the elderly, this procedure increased 168% during the same period. The rate of stent insertion also more than doubled for the population 4564 years of age, increasing from 157 to 318 per 100 000.300
- In 2003, approximately 84% of 660 000 hospitalized patients who underwent a coronary angioplasty received a stent. Black and white patients were equally likely to receive a stent. However, white patients were more likely than black patients to receive a drug-eluting stent.301
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14. Economic Cost of Cardiovascular Diseases
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The cost of cardiovascular diseases and stroke in the United
States for 2006 is estimated at $403.1 billion. This figure
includes health expenditures (direct costs, which include the
cost of physicians and other professionals, hospital and nursing
home services, the cost of medications, home health care and
other medical durables) and lost productivity resulting from
morbidity and mortality (indirect costs). By comparison, in
2004 the estimated cost of all cancers was $190 billion ($69
billion in direct costs, $17 billion in morbidity indirect costs
and $104 billion in mortality indirect costs). In 1999, the
estimated cost of HIV infections was $28.9 billion ($13.4 billion
direct and $15.5 billion indirect).
See Chart 14A and Table 14A.302305
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Chart 14A. Estimated direct and indirect costs (in billions of dollars) of major cardiovascular diseases and stroke (United States: 2006).
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TABLE 14A. Estimated Direct and Indirect Costs (in Billions of Dollars) of Cardiovascular Diseases and Stroke: United States: 2006
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15. At-a-Glance Summary Tables
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See
Tables 15A through 15D.
292,293,143,157
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16. Glossary
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- Age-Adjusted RatesUsed mainly to compare the rates of two or more communities, population groups or the nation as a whole, over time. The American Heart Association uses a standard population (2000), so that these rates arent affected by changes or differences in the age composition of the population.
- AHRQAgency for Healthcare Research and QualityA part of the US Department of Health and Human Services, this is the lead agency charged with supporting research designed to improve the quality of healthcare, reduce its cost, improve patient safety, decrease medical errors, and broaden access to essential services. AHRQ sponsors and conducts research that provides evidence-based information on healthcare outcomes; quality; and cost, use, and access. The information helps healthcare decisionmakerspatients and clinicians, health system leaders, and policymakersmake more informed decisions and improve the quality of healthcare services.
- Bacterial EndocarditisAn infection of the hearts inner lining (endocardium) or the heart valves. The bacteria that most often cause endocarditis are streptococci, staphylococci, and enterococci.
- Body Mass Index (BMI)A mathematical formula to assess body weight relative to height. The measure correlates highly with body fat. Calculated as weight in kilograms divided by the square of the height in meters (kg/m2).
- Centers for Disease Control and Prevention/National Center for Health Statistics (CDC/NCHS)An agency within the US Department of Health and Human Services (USDHHS). The CDC conducts the:
- Behavioral Risk Factor Surveillance System (BRFSS), an ongoing study.
- The NCHS conducted the:
- National Ambulatory Medical Care Survey (NAMCS).
- National Health Examination Survey (NHES).
- National Health and Nutrition Examination Survey I (NHANES I, 197174).
- National Health and Nutrition Examination Survey II (NHANES II,197680).
- National Health and Nutrition Examination Survey III (NHANES III, 198894). Prevalence estimates for coronary heart disease, stroke and congestive heart failure are based on the self-reported questionnaire portion of this study. Exam-based estimates are being developed.
- National Health and Nutrition Examination Survey (NHANES, 19992002).
- The NCHS also conducts these ongoing studies (among others):
- National Health Interview Survey (NHIS)
- National Hospital Ambulatory Medical Care Survey
- National Home and Hospice Care Survey
- National Hospital Discharge Survey
- Centers for Medicare and Medicaid Services (CMS), formerly Health Care Financing Administration (HCFA)The federal agency that administers the Medicare, Medicaid and Child Health Insurance Programs, which provide health insurance for more than 74 million Americans.
- Comparability RatioProvided by the NCHS to allow time-trend analysis from one ICD revision to another. It compensates for the "shifting" of deaths from one causal code number to another. Its application to mortality based on one ICD revision means that mortality is "comparability-modified" to be more comparable to mortality coded to the other ICD revision.
- Coronary Heart Disease (ICD/10 codes I20I25)This category includes acute myocardial infarction (I21I22); other acute ischemic (coronary) heart disease (I24); angina pectoris (I20); atherosclerotic cardiovascular disease (I25.0); and all other forms of chronic ischemic heart disease (I25.1I25.9).
- Death RateThe relative frequency with which death occurs within some specified interval of time in a population. National death rates are computed per 100 000 population. Dividing the mortality by the population gives a crude death rate. Its restricted because it doesnt reflect a populations composition with respect to such characteristics as age, sex, race or ethnicity. Thus rates calculated within specific subgroups, such as age-specific or sex-specific rates, are often more meaningful and informative. They allow well-defined subgroups of the total population to be examined.
- Diseases of the Circulatory SystemICD codes (I00I99); included as part of what the American Heart Association calls "Cardiovascular Disease." Mortality data for states can be obtained from cdc.gov/nchs, by direct communication with the CDC/NCHS, or from our National Center Biostatistics Program Coordinator on request. (See "Total Cardiovascular Disease" in this Glossary.)
- Diseases of the HeartClassification the NCHS uses in compiling the leading causes of death. Includes acute rheumatic fever/chronic rheumatic heart diseases (I00I09); hypertensive heart disease (I11) and hypertensive heart and renal disease (I13); coronary heart disease (I20I25); pulmonary heart disease and diseases of pulmonary circulation (I26I28); heart failure (I50); and other forms of heart disease (I29I49, I50.1I51). "Diseases of the Heart" is not equivalent to "Total Cardiovascular Disease," which the American Heart Association prefers to use to describe the leading causes of death. "Diseases of the Heart" represents about three-fourths of "Total Cardiovascular Disease" mortality.
- Health Care Financing Administration (HCFA)See Centers for Medicare and Medicaid Services (CMS).
- Hispanic OriginIn US government statistics, "Hispanic" includes persons who trace their ancestry to Mexico, Puerto Rico, Cuba, Spain, the Spanish-speaking countries of Central or South America, the Dominican Republic or other Spanish cultures, regardless of race. It doesnt include people from Brazil, Guyana, Suriname, Trinidad, Belize and Portugal because Spanish is not the first language in those countries. Much of our data are for Mexican Americans or Mexicans, as reported by government agencies or specific studies. In many cases, data for all Hispanics are more difficult to obtain.
- Hospital DischargesThe number of inpatients discharged from short-stay hospitals where some type of disease was the first listed diagnosis. Discharges include people discharged alive and dead.
- ICD CodesA classification system in standard use in the United States. The "International Classification of Diseases" (ICD) is published by the World Health Organization. This system is reviewed and revised about every 10 to 20 years to ensure its continued flexibility and feasibility. The tenth revision (ICD/10) began with the release of 1999 final mortality data. The ICD revisions can cause considerable change in the number of deaths reported for a given disease. The NCHS provides "comparability ratios" to compensate for the "shifting" of deaths from one ICD code to another. In this update the reported mortality is used for one years data. To compare the number or rate of deaths with that of an earlier year, the "comparability-modified" number or rate is used.
- IncidenceAn estimate of the number of new cases of a disease that develop in a population in a one-year period. For some statistics, new and recurrent attacks or cases are combined. The incidence of a specific disease is estimated by multiplying the incidence rates reported in community- or hospital-based studies by the US population. The rates change only when new data are available; they are not computed annually.
- Major Cardiovascular DiseasesDisease classification commonly reported by the NCHS; represents ICD codes I00I78. The American Heart Association doesnt use "Major CVD" for any calculations. See "Total Cardiovascular Disease" in this Glossary.
- Metabolic Syndrome*The metabolic syndrome is defined as having any 3 of the following 5 diagnostic measures: elevated waist circumference (102 cm. in men or 88 cm. in women); elevated triglycerides (150 mg/dL [1.7 mmol/L] or drug treatment for elevated triglycerides); reduced HDL (high density lipoprotein) cholesterol (<40 mg/dL [0.9 mmol/L] in men or <50 mg/dL [1.1 mmol/L] in women or drug treatment for reduced HDL cholesterol); elevated blood pressure (130 mm Hg systolic blood pressure or 85 mm Hg diastolic blood pressure or drug treatment for hypertension); elevated fasting glucose (100 mg/dL or drug treatment for elevated glucose). *According to criteria established by the American Heart Association/National Heart, Lung, and Blood Institute, in "Diagnosis and Management of the Metabolic Syndrome: An American Heart Association/National Heart, Lung, and Blood Institute Scientific Statement," published in Circulation. (2005, Vol. 112, pages 2735-2752)
- MorbidityIncidence and prevalence rates are both measures of morbidity, that is, measures of various effects of disease on a population.
- MortalityThe total number of deaths from a given disease in a population during a specific interval of time, usually a year. These data are compiled from death certificates and sent by state health agencies to the NCHS. The process of verifying and tabulating the data takes about two years. For example, 2002 mortality statistics, the latest available, didnt become available until late 2004. Mortality is "hard" data, so its possible to do time-trend analysis and compute % changes over time.
- National Heart, Lung, and Blood Institute (NHLBI)An institute in the National Institutes of Health in the US Department of Health and Human Services. The NHLBI conducts such studies as the:
- Framingham Heart Study (FHS) (1948 to date).
- Honolulu Heart Program (HHP) (196597).
- Cardiovascular Health Study (CHS) (1988 to date).
- Atherosclerosis Risk in Communities (ARIC) study (1985 to date).
- Strong Heart Study (SHS) (198992; 199198).
- The NHLBI also publishes: The reports of the Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure. JNC 7 is the most recent. The report of the National Cholesterol Education Program, Third Report of the Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults (Adult Treatment Panel III, or ATP III).
- National Institute of Neurological Disorders and Stroke (NINDS)An institute in the National Institutes of Health in the US Department of Health and Human Services. The NINDS sponsors and conducts research studies such as these:
- Greater Cincinnati/Northern Kentucky Stroke Study (GCNKSS)
- Rochester (Minnesota) Stroke Epidemiology Project
- Northern Manhattan Stroke Study (NOMASS)
- Brain Attack Surveillance in Corpus Christi (BASIC) Project
- PrevalenceAn estimate of the total number of cases of a disease existing in a population at a specific point in time. Prevalence is sometimes expressed as a percentage of population. Rates for specific diseases are calculated from periodic health examination surveys that government agencies conduct. Annual changes in prevalence as reported in this booklet only reflect changes in the population; rates do not change until theres a new survey.
- NOTE: In the data tables which precede the different disease and risk factor categories, if the percentages shown are age-adjusted, they will not add to the total.
- Race and Hispanic OriginRace and Hispanic origin are reported separately on death certificates. In this publication, unless otherwise specified, deaths of Hispanic origin are included in the totals for whites, blacks, American Indians or Alaska Natives and Asian or Pacific Islanders, according to the race listed on the decedents death certificate. Data for Hispanic persons include all persons of Hispanic origin of any race. See "Hispanic Origin" in this Glossary.
- Stroke (ICD/10 codes I60I69)This category includes subarachnoid hemorrhage (I60); intracerebral hemorrhage (I61); other nontraumatic intracranial hemorrhage (I62); cerebral infarction (I63); stroke, not specified as hemorrhage or infarction (I64); occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction (I65); occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction (I66); other cerebrovascular diseases (I67); cerebrovascular disorders in diseases classified elsewhere (I68) and sequalae of cerebrovascular disease (I69).
- Total Cardiovascular Disease (ICD/10 codes I00I99, Q20Q28)This category includes rheumatic fever/rheumatic heart disease (I00I09); hypertensive diseases (I10I15); ischemic (coronary) heart disease (I20I25); pulmonary heart disease and diseases of pulmonary circulation (I26I28); other forms of heart disease (I30I52); cerebrovascular disease (stroke) (I60I69); atherosclerosis (I70); other diseases of arteries, arterioles and capillaries (I71I79); diseases of veins, lymphatics and lymph nodes, not classified elsewhere (I80I89); and other and unspecified disorders of the circulatory system (I95I99). When data are available, we include congenital cardiovascular defects (Q20Q28).
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Abbreviation Guide
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ACEangiotensin-converting enzyme
ACSacute coronary syndrome
ADHEREAcute Decompensated HEart Failure National REgistry
AEDautomated external defibrillator
AFatrial fibrillation
AHAAmerican Heart Association
AHRQAgency for Healthcare Research and Quality
AIDSacquired immune deficiency syndrome
AJCAmerican Journal of Cardiology
APangina pectoris
ARICAtherosclerosis Risk in Communities
ATPAdult Treatment Panel
BMIbody mass index
BPblood pressure
BRFSSBehavioral Risk Factor Surveillance System
BWISBaltimore-Washington Infant Study
CADcoronary artery disease
CDCCenters for Disease Control and Prevention
CHDcoronary heart disease
HFheart failure
CHSCardiovascular Health Study
CMSCenters for Medicare and Medicaid Services
COPDChronic obstructive pulmonary disease
CPIConsumer Price Index
CPRcardiopulmonary resuscitation
CVDcardiovascular disease
DVTdeep vein thrombosis
EDemergency department
EMSemergency medical services
ERemergency room
ESRDend-stage renal disease
FHSFramingham Heart Study
GCNKSSGreater Cincinnati/Northern Kentucky Stroke Study
GWTGGet With The GuidelinesSM
HBPhigh blood pressure
HCFAHealth Care Financing Administration
HCUPHealthcare Cost and Utilization Project
HDLhigh-density lipoprotein
HHPHonolulu Heart Program
HIVhuman immunodeficiency virus
ICDInternational Classification of Diseases
ICDAInternational Classification of Diseases, Adapted
ICHintracerebral hemorrhage
JACCJournal of the American College of Cardiology
JAMAJournal of the American Medical Association
JCAHOJoint Commission on Accreditation of Health Care Organizations
JNCJoint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure
kcalkilocalories
LDLlow-density lipoprotein
LVleft ventricular
LVEFleft ventricular ejection fraction
MACDPMetropolitan Atlanta Congenital Defects Program
MetSmetabolic syndrome
mg/dLmilligrams per deciliter
MImyocardial infarction
mm Hgmillimeters of mercury
MMWRMorbidity and Mortality Weekly Report
NCEPNational Cholesterol Education Program
NCHSNational Center for Health Statistics
NCQANational Committee for Quality Assurance
NEJMNew England Journal of Medicine
NHANESNational Health and Nutrition Examination Survey
NHESNational Health Examination Survey
NHISNational Health Interview Survey
NHLBINational Heart, Lung, and Blood Institute
NIDDKNational Institute of Diabetes and Digestive and Kidney Diseases
NIHSSNational Institutes of Health Stroke Scale
NINDSNational Institute of Neurological Disorders and Stroke
NOMASSNorthern Manhattan Stroke Study
NRMINational Registry of Myocardial Infarction
NVSSNational Vital Statistics System
ORodds ratio
PAphysical activity
PADperipheral arterial disease
PTCApercutaneous transluminal coronary angioplasty
PEpulmonary embolism
PTEpulmonary thromboembolism
PVDperipheral vascular disease
RFrheumatic fever
RHDrheumatic heart disease
RRrelative risk
SAHsubarachnoid hemorrhage
SCDsudden cardiac death
SESsocioeconomic status
SHSStrong Heart Study
STEMIST elevation myocardial infarction
TIAtransient ischemic attack
UAunstable angina
UNOSUnited Network for Organ Sharing
USDAUnited States Department of Agriculture
USDHHSUnited States Department of Health and Human Services
VFventricular fibrillation
VSDventricular septal defect
VTEvenous thromboembolism
WHOWorld Health Organization
YLLyears of life lost
YMCLSYouth Media Campaign Longitudinal Study
YRBSYouth Risk Behavior Surveillance
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Chart 2A. Trends in the age-adjusted prevalence of health conditions, US adults ages 2074 (NHANES: 197174 to 19992000). Source: Briefel and Johnson.27a Printed with permission from the Annual Review of Nutrition.
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Chart 2B. Trends in cardiovascular risk factors in the US population ages 2074 (NHES: 196062; NHANES: 197175 to 19992000). Source: Gregg et al.28 In this study, high total cholesterol was defined as greater than or equal to 240 mg/dL; high blood pressure was defined as greater than or equal to 140/90 mm Hg.
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Chart 2C. Deaths from diseases of the heart (United States: 19002003). Note: See Glossary for an explanation of "Diseases of the Heart." Total cardiovascular disease data are not available for much of the period covered by this chart. Source: CDC/NCHS. Preliminary mortality for 2003.
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Chart 2D. Hospital discharges for cardiovascular diseases (United States: 19702003). Note: Hospital discharges include people discharged alive and dead. Source: National Hospital Discharge Survey, CDC/NCHS and NHLBI.
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Chart 2E. Percentage breakdown of deaths from cardiovascular diseases (United States: 2003 [preliminary]). Source: CDC/NCHS and NHLBI.
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Chart 2F. Prevalence of cardiovascular diseases in Americans age 20 and older by age and sex (NHANES: 19992002). Source: CDC/NCHS and NHLBI. These data include CHD, CHF, stroke, and hypertension.
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Chart 2G. Charts 2G, 2H, 2I, and 2J make a comparison of total CVD deaths as compared with total cancer deaths for the total US population and also by specific age groups. Overall, there are an estimated 71.3 million people in the United States living with CVD, which causes over 910 000 deaths annually compared to over 554 000 cancer deaths. Chart 2G: CVD deaths versus cancer deaths by age (United States: 2003 [preliminary]). Source: CDC/NCHS and NHLBI. Charts 2H, 2I, and 2J: Source: CDC/NCHS and NHLBI.
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Chart 2H. Three leading causes of death: total, under age 85, and 85 and older. Deaths: both sexes, United States, 2003.
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Chart 2I. Three leading causes of death: total, under age 85, and 85 and older. Deaths in males, United States, 2003.
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Chart 2J. Three leading causes of death: total, under age 85, and 85 and older. Deaths in females, United States, 2003. Source: CDC/NCHS and NHLBI. Note: 2003 mortality is preliminary.
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Chart 2K. Leading causes of death for all males and females (United States: 2003 [preliminary]). A, Total CVD; B, cancer; C, accidents; D, chronic lower respiratory diseases; E, diabetes mellitus; F, Alzheimers disease. Source: CDC/NCHS and NHLBI.
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Chart 2L. Leading causes of death for white males and females (United States: 2003 [preliminary]). A, Total CVD; B, cancer; C, accidents; D, chronic lower respiratory diseases; E, diabetes mellitus; F, Alzheimers disease. Note: In 2002, using "Diseases of the Heart and Stroke," which do not constitute total CVD, the percentages of the "A" bars would be 34.1 for males and 36.8 for females. Source: CDC/NCHS and NHLBI.
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Chart 2M. Leading causes of death for black or African-American males and females (United States: 2003 [preliminary]). A, Total CVD; B, cancer; C, accidents; D, assault (homicide); E, HIV (AIDS); F, diabetes mellitus; G, nephritis, nephrotic syndrome and nephrosis. Note: In 2002, using "Diseases of the Heart and Stroke," which do not constitute total CVD, the percentages of the "A" bars would be 30.6 for males and 36.0 for females. Source: CDC/NCHS and NHLBI.
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Chart 2N. Leading causes of death for Hispanic or Latino males and females (United States: 2002). A, Diseases of the heart, and stroke; B, cancer; C, accidents; D, diabetes mellitus; E, assault (homicide); F, chronic lower respiratory disease. Source: CDC/NCHS.
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Chart 2O. Leading causes of death for Asian or Pacific Islander males and females (United States: 2002). A, Diseases of the heart, and stroke; B, cancer; C, accidents; D, chronic lower respiratory diseases; E, diabetes mellitus; F, influenza and pneumonia. Note: "Asian or Pacific Islander" is a heterogeneous category that includes people at high CVD risk (e.g., South Asian) and people at low CVD risk (e.g., Japanese). More specific data on these groups arent available. Source: CDC/NCHS.
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Chart 2P. Leading causes of death for American Indian or Alaska Native males and females (United States: 2002). A, Diseases of the heart, and stroke; B, cancer; C, accidents; D, diabetes mellitus; E, chronic liver disease and cirrhosis; F, chronic lower respiratory diseases. Source: CDC/NCHS.
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Chart 2Q. Age-adjusted death rates for coronary heart disease, stroke, and lung and breast cancer for white and black females (United States: 2003 [preliminary]). Source: CDC/NCHS and NHLBI.
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Chart 2R. Cardiovascular disease mortality trends for males and females (United States: 19792003 [preliminary]). Source: CDC/NCHS and NHLBI.
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Chart 3A. Estimated 10-year CHD risk in 55-year-old adults according to levels of various risk factors (Framingham Heart Study). Source: Wilson et al.67
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Chart 3B. Annual number of Americans having diagnosed heart attack by age and sex (ARIC: 19872000). Source: Extrapolated from rates in the NHLBIs ARIC surveillance study, 19872000. These data dont include silent MIs.
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Chart 3C. Annual rate of first heart attacks by age, sex and race (ARIC: 19872000). Source: NHLBIs ARIC surveillance study, 19872000.
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Chart 3D. Prevalence of coronary heart disease by age and sex (NHANES: 19992002). Source: CDC/NCHS and NHLBI.
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Chart 3E. Hospital discharges for coronary heart disease by sex (United States: 19702003). Note: Hospital discharges include people discharged alive and dead. Source: National Hospital Discharge Survey, CDC/NCHS and NHLBI.
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Chart 4A. Risk of stroke in women in the third trimester, peri- and post-partum period versus risk of nonpregnant women and women in the first 2 trimesters. Source: Salonen et al.102
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Chart 4C. Annual rate of first cerebral infarction by age, sex and race (Greater Cincinnati/Northern Kentucky Stroke Study: 199394). Sources: Unpublished data from the GCNKSS; Kissela et al.143
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Chart 4D. Annual rate of first intracerebral hemorrhage by age, sex and race (Greater Cincinnati/Northern Kentucky Stroke Study: 199394). Source: Kissela et al.143
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Chart 4E. Estimated 10-year stroke risk in 55-year-old adults according to levels of various risk factors (Framingham Heart Study). Source: Wolf et al.144
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Chart 4F. Trends in carotid endarterectomy procedures (United States: 19792003). Source: CDC/NCHS and NHLBI.
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Chart 5A. Prevalence of high blood pressure in Americans by age and sex (NHANES: 19992002). Source: CDC/NCHS and NHLBI.
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Chart 5B. Age-adjusted prevalence trends for high blood pressure in Americans age 20 and older by race/ethnicity, sex and survey (NHANES: 198894 and 19992002). Source: Health, United States, 2004, CDC/NCHS. Data based on 3 measures of blood pressure. NH indicates non-Hispanic; AA, African American.157
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Chart 5C. Extent of awareness, treatment and control of high blood pressure by race/ethnicity (NHANES: 19992002). Source: MMWR.158 NH indicates non-Hispanic.
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Chart 5D. Extent of awareness, treatment and control of high blood pressure by age (NHANES: 19992002). Source: MMWR.158
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Chart 7B. Hospital discharges for heart failure by sex (United States: 19702003). Note: Hospital discharges include people discharged alive and dead. Source: National Hospital Discharge Survey, CDC/NCHS and NHLBI.
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Chart 9A. Prevalence of high school students in grades 912 reporting current cigarette smoking by sex and race/ethnicity. (YRBS: 2003) Source: MMWR.228 NH indicates non-Hispanic.
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Chart 9B. Prevalence of current smoking for Americans age 18 and older by race/ethnicity and sex (NHIS: 2004). Source: MMWR.210 NH indicates non-Hispanic.
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Chart 9C. Trends in mean total serum cholesterol among adults age 20 and older by race/ethnicity, sex and survey (NHANES: 198894 and 19992002). Source: Carroll et al.234
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Chart 9D. Trends in mean total serum cholesterol among adolescents ages 1217 by race, sex and survey (NHES III: 196670, NHANES I & III: 197174, 198894). Source: CDC/NCHS. Hickman et al.236
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Chart 9E. Age-adjusted prevalence of Americans age 20 and older with LDL cholesterol of 130 mg/dL or higher by race/ethnicity and sex (NHANES: 19992002). Source: CDC/NCHS and NHLBI. NH indicates non-Hispanic.
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Chart 9F. Age-adjusted prevalence of Americans age 20 and older with HDL cholesterol under 40 mg/dL by race/ethnicity and sex (NHANES: 19992002). Source: CDC/NCHS and NHLBI. NH indicates non-Hispanic.
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Chart 9G. Prevalence of students in grades 912 who participated in sufficient vigorous or moderate physical activity during the past 7 days by race/ethnicity and sex (YRBS: 2003). Note: "Sufficient vigorous activity" is defined as activity causing sweating and hard breathing for at least 20 minutes on 3 or more of the 7 days of the week. "Sufficient moderate activity" is defined as activities that did not cause sweating or hard breathing, lasting for at least 30 minutes on 5 or more of the 7 days of the week. Source: MMWR.237
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Chart 9H. Prevalence of leisure-time physical inactivity in Americans age 18 and older by race/ethnicity and sex. BRFSS: 1994, 2000, 2004. Source: MMWR.238 NH indicates non-Hispanic.
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Chart 9I. Prevalence of overweight among students in grades 912 by sex and race/ethnicity (YRBS: 2003). Source: BMI 95th percentile or higher by age and sex of the CDC 2000 growth chart. MMWR.237 NH indicates non-Hispanic.
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Chart 9J. Age-adjusted prevalence of obesity in Americans ages 2074 by sex and survey (NHES 196062; NHANES: 197174, 197680, 198894 and 19992002). Note: Obesity is defined as a BMI of 30.0 or higher. Source: Health, United States, 2004. CDC/NCHS.
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Chart 9K. Trends in the prevalence of overweight among US children and adolescents by age and survey (NHANES: 197174, 197680, 198894 and 19992002; NHANES: 1971-74 to 1999-2002). Source: Health, United States, 2004. CDC/NCHS.
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Chart 9L. Age-adjusted prevalence of physician-diagnosed diabetes in Americans age 20 and older by race/ethnicity and sex (NHANES: 19992002). Source: CDC/NCHS and NHLBI. NH indicates non-Hispanic.
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Chart 9M. Prevalence of noninsulin-dependent (type 2) diabetes in women* ages 2564 by race/ethnicity and education (NHANES III: 198894). *Findings for men are similar but of lower magnitude. See: Winkleby et al.21,271
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Chart 10A. Total mortality rates in US adults, ages 3075, with metabolic syndrome (MetS), with and without diabetes mellitus (DM) and pre-existing CVD (NHANES II 197680 Follow-Up Study*). Source: Malik et al.278 *Average of 13 years of follow-up.
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Chart 13A. Trends in heart transplants (UNOS: 19682004). Source: United Network for Organ Sharing (UNOS), scientific registry data.
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Chart 13B. Trends in cardiovascular inpatient operations and procedures (United States, 19792003). Source: CDC/NCHS and NHLBI. Note: In-hospital procedures only.
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TABLE 12A. JCAHO Standardized Measures. Data were recently published on Joint Commission on Accreditation of Healthcare Organization (JCAHO) standardized "core" quality measures. (Williams et al292) Below are summary data on inpatient measures for acute MI and heart failure from the 2nd quarter of 2004 from 3377 hospitals nationally.
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TABLE 12B. National Medicare and Medicaid Data. As part of the Hospital Quality Alliance Program, data is collected by the Centers for Medicare and Medicaid Services on quality-of-care indicators for conditions including acute MI and heart failure. Data from hospital admissions from the first half of 2004 from 3558 hospitals were recently published (Jha et al293) and are summarized as follows:
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TABLE 12C. National Veterans Health Administration Data. The VA collects national quality performance data related to cardiovascular disease. Aggregate data from 158 VA hospitals for the period between January 2004 and March 2005 are listed below (Office of Quality and Performance, Veterans Health Administration). Only patients who were candidates for each quality indicator were considered (ie, patients with contraindications to a given therapy were not considered).
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TABLE 12D. American Heart Association GWTGCAD Program. Get With The GuidelinesSM (GWTG)Coronary Artery Disease (CAD) is a national quality improvement initiative of the American Heart Association to help hospitals redesign systems of care to improve guidelines adherence in patients admitted with a cardiovascular event. The table below summarizes performance on the selected quality-of-care indicators for CAD events. These were collected from 74 848 patients who were admitted to 336 hospitals participating in the GWTGCAD program from Jan.1, 2004Dec. 31, 2004.
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TABLE 12E. American Stroke Association GWTGStroke Program. Get With The GuidelinesSM (GWTG)Stroke is a national quality improvement initiative of the American Heart Association to help hospitals redesign systems of care to improve guidelines adherence in patients admitted with an ischemic stroke or transient ischemic attack (TIA). The table below summarizes performance on the selected treatment and quality-of-care indicators for acute stroke and secondary prevention. There were 40 615 clinically identified patients who were admitted to 297 hospitals participating in the GWTGStroke program from Jan. 1, 2004Dec. 31, 2004.
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TABLE 12F. Acute Stroke Care Registry Data. The Paul Coverdell National Acute Stroke Registry has published results from 4 pilot registries, representing 6867 admissions from 98 hospitals for the years 200102. (The Paul Coverdell Prototype Registries Writing Group.115) Data on select in-hospital and secondary preventive measures are summarized below:
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TABLE 12G. Heart Failure Registry Data. The ADHERE (Acute Decompensated HEart Failure National REgistry) Registry is a national observational registry of patients hospitalized with acute decompensated heart failure (www.adhereregistry.com). Hospitals from all regions of the country participate, including community, tertiary and academic. The demographics of the 169 hospitals participating are representative of the nations hospitals as a whole. The Joint Commission on Accreditation of Health Care Organizations (JCAHO) has created, tested and validated a set of heart failure core quality-of-care measures. Mean performance of the JCAHO quality indicators from a data set of 36 353 patients enrolled May 2004April 2005 from these 169 U.S. hospitals was as follows:
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TABLE 12H. Acute Coronary Syndrome Registry Data. CRUSADE (Can Rapid Stratification of Unstable Angina Patients Suppress ADverse Outcomes with Early Implementation of the ACC/AHA Guidelines) is a national quality improvement initiative designed to increase adherence to guideline-recommended care for patients hospitalized with non-ST-segment elevation myocardial infarction or unstable angina (www.CRUSADEQI.com). Data on treatment measures from the CRUSADE registry on 138 719 patients from 521 hospitals from July 2001March 2005 are as follows:
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TABLE 12I. ACCNCDR Cardiac Catheterization and PCI Data. The American College of Cardiology maintains a number of clinical data registries as part of the ACCNational Cardiovascular Data Registry (ACC-NCDR®). Among them is the CathPCI Registry TM, which is composed of diagnostic cardiac catheterizations and interventional (PCI) procedures harvested from participating facilities across the nation. Listed below are aggregated data of patients discharged in 2004 from 359 participating facilities. Only records with valid responses to indicators were considered. For more information, visit www.acc.org or call 18002534636, ext 451.
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TABLE 13A. 2003 National HCUP Statistics. Data from the latest Healthcare Cost and Utilization Project (HCUP) provide data for the mean charges and in-hospital death rate for the following (hcup.ahrq.gov):
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TABLE 13B. Estimated* Inpatient Cardiovascular Operations, Procedures and Patient Data by Sex, Age and RegionUnited States: 2003 (in Thousands)
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Acknowledgments
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We wish to thank Drs. Joseph Broderick, Hong Chang, Michael
Criqui, Brian Eigel, Gregg Fonarow, Mary Fran Hazinski, Kathy
Jenkins, Alice Liechtenstein, Mary McDermott, Graham Nicole,
Jerry Potts, Kathryn Taubert, and Christine Williams for their
valuable comments and contributions. We would like to acknowledge
Tim Anderson and Tom Schneider for their editorial assistance.
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Footnotes
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*The findings and conclusions in this report are those of the
authors and do not necessarily represent the views of the Centers
for Disease Control and Prevention.
**In addition to these writing group members.
The American Heart Association makes every effort to avoid any actual or potential conflicts of interest that may arise as a result of an outside relationship or a personal, professional, or business interest of a member of the writing panel. Specifically, all members of the writing group are required to complete and submit a Disclosure Questionnaire showing all such relationships that might be perceived as real or potential conflicts of interest.
A single reprint is available by calling 800-242-8721 (US only) or writing the American Heart Association, Public Information, 7272 Greenville Ave, Dallas, TX 75231-4596. Ask for reprint No. 71-0354. To purchase additional reprints: up to 999 copies, call 800-611-6083 (US only) or fax 413-665-2671; 1000 or more copies, call 410-528-4121, fax 410-528-4264, or e-mail kramsay@lww.com. To make photocopies for personal or educational use, call the Copyright Clearance Center, 978-750-8400.
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