Table 1.

Baseline characteristics by quintile of fiber intake in EPIC participants

Quintile of dietary fiberMen
Women
P
Q1Q2Q3Q4Q5Q1Q2Q3Q4Q5
Dietary fiber (mean g/d)18.221.023.225.630.115.917.819.421.324.3
Colorectal cancer cases198167156136107238231197199197
Age (y)52.052.552.452.151.250.851.251.451.351.2<0.001
Weight (kg)81.181.381.281.381.466.967.467.467.668.10.01
Height (m)1.741.751.751.751.761.621.621.631.631.63<0.001
Body mass index (kg/m2)26.826.726.526.426.425.625.625.525.525.6<0.001
Physical activity (%)<0.001*
    Inactive33.128.926.422.617.231.028.326.425.023.7
    Moderately inactive27.932.133.032.330.322.624.124.925.426.9
    Moderately active18.419.419.921.623.923.825.726.628.732.2
    Active17.716.817.619.824.27.77.17.07.07.3
    Unknown2.92.73.23.74.414.914.815.113.99.9
Smoking status (%)<0.001*
    Never29.731.532.833.935.348.153.755.858.361.2
    Former34.838.237.836.935.221.723.323.423.021.9
    Smoker33.628.827.927.828.128.220.818.516.214.2
    Unknown1.91.51.51.51.42.02.22.32.52.7
Energy from fat (kcal/d)6947918629381,060561637690748833<0.001
Energy from nonfat (kcal/d)1,1951,3971,5471,7121,9759301,1091,2331,3591,565<0.001
Red and processed meat (g/d)123.3111.8104.495.979.783.476.170.664.653.6<0.001
Folate (μg/d)243.8282.2308.9336.5389.6209.6247.1271.2297.3350.8<0.001
Alcohol (g/d)33.525.620.315.37.811.89.37.86.23.8<0.001
  • NOTE: Values are means adjusted for center (all variables) and age at enrollment (all variables except age). Quintiles of fiber are based on the food frequency questionnaires, and means were estimated from 24-hour recall data. Means of other dietary variables are based on food frequency questionnaires and adjusted for energy intake.

  • * P values for trend and association were the same for men and women. All values are significant due to large size of the cohort.