Table 1.

Baseline characteristics of 45,354 women in the BCDDP follow-up cohort according to quintile of dietary calcium intake (all values are percentages or means in units listed)

Quintile of dietary calcium intake*
1
2
3
4
5
<412.3 (mg/d)*412.4-528.9 (mg/d)*529.0-656.2 (mg/d)*656.3-830.9 (mg/d)*≥830.9 (mg/d)*
Calcium—diet (mg)*332.1471.6589.8736.61,057.7
Calcium—supplements (mg)286.4322.3322.1306.7391.8
Dietary vitamin D (IU)*66.3105.2133.5175.2270.8
Age61.161.761.962.262.4
Energy (kcal)1,2731,2581,2831,2881,265
Body mass index (kg/m2)24.724.724.724.724.5
Height (inches)63.863.964.064.064.1
Physical activity (metabolic equivalent time)56.656.957.257.256.7
Alcohol (g)5.64.33.93.62.8
Vegetables (servings)*2.62.93.03.03.0
Fruit (servings)*1.21.31.31.31.3
Red meat (g)*39.134.832.329.724.0
Energy from fat (%)37.635.835.534.431.4
Fiber (g)*9.311.211.411.611.6
Folate from diet (μg)*203254266274285
Supplemental folate (μg)139151155166177
NSAID users (%)37.837.338.540.039.9
Smokers, current/former (%)45.343.442.742.741.6
More than high school education (%)40.643.945.748.452.6
  • * Adjusted for total energy using the residual method as described in the text.