Characteristics of American Cancer Society Cohorts

 

 

 

  CPS-I CPS-II Baseline CPS-II Nutrition CPS-II LifeLink

Study Design

       

Study participants

1,000,000 1,200,000 184,000 40,000

Volunteer recruiters

     68,000      77,000     7,000   2,000

Years of follow-up

1959-1972 1982 - ongoing 1992 - ongoing 1998 - ongoing

Number of States

25 50 21 20
         

Demographics

       
Women (%) 57 57 53 56
White (%) 97 93 97 97
Black (%) 2 4 1 1
Married (%) 85 83 88 -
College Graduate (%) 17 30 38 50
Age at entry (median) 52 57 63 69
                          (range) 30-108 30-111 40-92 48-95
         

Exposures

       
Prevalent Cancer (%) 3 7 12 13
Current cigarette smoker (%) 29 20 7 5
Current alcohol drinker (%) 33 42 57 68
Current hormone use (%) - 15 31 52