Original Cohort

Research Exam Center staff member helping a participant get ready for a test.

The Original Cohort of the Framingham Heart Study consisted of 5,209 respondents of a random sample of 2/3 of the adult population of Framingham, Massachusetts, 30 to 62 years of age by household, in 1948. Exam 32 for the Original Cohort ended in April of 2014.

AGE-SEX DISTRIBUTION AT ENTRY (1948)
Age 29-39 40-49 50-62 Totals
Men 835 779 722 2,336
Women 1,042 962 869 2,873
Totals 1,877 1,741 1,591 5,209