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Sponsored by: |
National Heart, Lung, and Blood Institute (NHLBI) |
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Information provided by: | National Heart, Lung, and Blood Institute (NHLBI) |
ClinicalTrials.gov Identifier: | NCT00005499 |
To investigate trends in the incidence and survival rates of congestive heart failure (CHF) in two successive cohorts of elderly people (1970-74, 1990-94) in a health maintenance organization (HMO).
Condition |
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Cardiovascular Diseases Heart Diseases Heart Failure, Congestive Heart Failure |
Study Type: | Observational |
Study Design: | Natural History |
Study Start Date: | July 1998 |
Estimated Study Completion Date: | June 2001 |
BACKGROUND:
The study constituted part of a growing body of research designed to understand not only the secular trends in mortality, morbidity, survival, and disability levels for selected major chronic diseases among older persons in the United States, but also the implications of the findings for health care utilization.
DESIGN NARRATIVE:
The design was that of a retrospective study of successive cohorts of a well-defined and well-documented elderly population for the purpose of identifying and explaining trends in congestive heart failure (CHF) incidence, survival, comorbidities and health services utilization during the 25-year period 1970-1994. The study sample consisted of two successive period cohorts of elderly people, identified for each of two five-year periods, 1970-1974 and 1990-94. The study tested the following hypotheses: 1) incidence of CHF had decreased among the younger old (65-74 years of age); 2) incidence of CHF had increased among the older old (75 years of age or above); 3) one-year survival time had increased following onset of incident CHF; and 4) prevalence of hypertension had decreased and prevalence of myocardial infarction and other manifestations of coronary artery disease increased among incident cases of CHF.
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
No eligibility criteria
Study ID Numbers: | 5017 |
Study First Received: | May 25, 2000 |
Last Updated: | June 23, 2005 |
ClinicalTrials.gov Identifier: | NCT00005499 History of Changes |
Health Authority: | United States: Federal Government |
Heart Failure Heart Diseases |
Heart Failure Heart Diseases Cardiovascular Diseases |