National Institute of Environmental Health Sciences   —  National Institutes of Health   —  U.S. Department of Health and Human Services

The Sister Study

Baseline Characteristics

Baseline Characteristics

The Sister Study cohort consists of 50,884 participants aged 35-74 without a history of breast cancer at baseline, as well as a passive cohort of 3,066 women who completed some, but not all, of the required baseline activities prior to the end of enrollment. The general characteristics of the cohort and passive cohort at baseline can be found in the links below.

link to Demographic Characteristics link to Lifestyle Characteristics

link to Reproductive Characteristics link to Geographic Characteristics




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