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Healthy Aging - Mammogram Within Past 2 Years
Indicator 11: Mammogram Within Past 2 Years
The chance of getting breast cancer increases as a woman gets older. Nearly eight of 10 cases of breast cancers are found in women over age 50.(1)
Early detection of breast cancer saves lives, and mammography is the best available method to detect breast cancer in its earliest, most treatable stage, several years before a lump can be felt. Timely mammography screening among women aged 40 or older could reduce breast cancer mortality by approximately 16% compared with women who are not screened.(2)
Mammograms for women aged 65 or older are covered by Medicare, but many women are still not taking advantage of this opportunity.
A confidence interval (CI) describes the level of
uncertainty of an estimate and specifies the range in which the true value is
likely to fall. The State of Aging and Health in America online report
uses a 95% level of significance, which means that 95% of the time, the true
value falls within these boundaries.
†
Rankings are based on the relative numeric scores for
each indicator, with a ranking of "1" indicating the highest rank.
‡
Grades are calculated as tertiles (thirds) and show state performance relative
to all other states.
§
2003 data are used for Hawaii because no 2004 data exist.
Note:When comparing
prevalence of variables across states or years, we recommend the use of
confidence intervals. If the confidence intervals overlap, the difference is
not statistically significant.
References:
1. American Cancer Society. What causes breast cancer? Available at http://www.cancer.org/docroot/CRI/content/CRI_2_2_2X_What_causes_breast_cancer_5.asp?sitearea= (accessed May 23, 2006).
2. Centers for Disease Control and Prevention. The National Breast and Cervical Cancer Early Detection Program: saving lives through screening. Atlanta, GA: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention; 2006. Available at http://www.cdc.gov/cancer/nbccedp/about2004.htm (accessed April 24, 2006).
Centers for Disease Control and Prevention 1600 Clifton Rd. Atlanta, GA
30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348, 24 Hours/Every Day - cdcinfo@cdc.gov