Table 1

Demographic characteristics of men according to lowest, medium and highest categories of calcium intake, CPS-II Nutrition Cohort, 1992–1999

CovariateCalcium intake (mg/day)
Lowest intake <700Third level intake 1000–1499Highest intake ≥2000
(n = 23,653)(n = 14,104)(n = 1330)
Age-adjusted percentagea or meansAge-adjusted percentagea or meansAge-adjusted percentagea or means
Age at enrollment (mean yr)63.164.465.6
Family history of prostate cancerb
 No88.588.088.5
 Yes11.512.011.5
Educationb
 Less than high school9.65.85.6
 High school graduate21.317.013.3
 Some college27.024.626.0
 College graduate20.822.922.1
 Graduate school21.329.733.3
Smoking statusb
 Nonsmokers28.336.640.0
 Current smokers11.17.15.6
 Former smokers60.656.354.4
Body mass index (mean)26.526.325.9
Energy intake (calories) (mean)1790.01833.11681.1
Total fat intake (g/day) (mean)76.369.754.4
Phosphorus intake (mg/day) (mean)977.11404.81801.7
Total vitamin D intake (IU/day) (mean)168.2427.5743.9
Dietary calcium (mg/day) (mean)527.51083.41603.9
Supplemental calcium (mg/day) (mean)17.2110.8746.7
Lycopene (mcg/day) (mean)4532.14846.34567.8
Red meat intake (servings/day) (mean)0.800.600.42
  • a Percentages and means are directly adjusted to the age distribution of the entire study population.

  • b Percentages may not sum to 100 because of missing data.