Table 1

Selected baseline characteristics for colon cancer cases, rectal cancer cases, and noncasesa

CharacteristicColon cancer (n = 152)Rectal cancer (n = 104)Noncases (n = 28,879)
Age (yr)59.4 ± 5.259.4 ± 5.257.2 ± 5.1
BMI (kg/m2)26.8 ± 3.926.2 ± 3.726.3 ± 3.8
Dietary intakeb
 Energy (kcal)2839 ± 7422781 ± 7982815 ± 787
 Fruit (g)93.9 ± 74.191.3 ± 88.288.7 ± 81.5
 Vegetables (g)153.6 ± 94.6157.0 ± 99.3153.1 ± 111.3
 Fat (g)123.9 ± 39.0121.4 ± 38.6122.9 ± 41.0
 Fiber (g)25.9 ± 10.025.1 ± 9.525.7 ± 10.3
 Alcohol (g)19.6 ± 23.017.3 ± 20.618.0 ± 21.6
 Calcium (mg)1342 ± 4811414 ± 7021398 ± 559
Years of smoking37.8 ± 8.336.6 ± 9.435.9 ± 8.5
Cigarettes smoked per day18.8 ± 8.819.3 ± 9.120.4 ± 8.8
Occupational activity (%)
 Nonworking52.050.042.2
 Sedentary18.417.313.7
 Walking14.516.418.2
 Lifting/walking7.910.616.6
 Heavy labor7.25.89.2
Leisure-time activity (%)
 Sedentary45.442.341.8
 Moderate49.350.052.2
 Heavy5.27.76.0
  • a Mean ± sd; some percentages may not add to 100% because of rounding error.

  • b Dietary variables available for 93% of the cohort (n = 27,111); values expressed on a per-day basis.