Table 1.

Baseline characteristics of colorectal cancer cases and controls, the SWHS (1996–2000)

Baseline characteristicsCases (n = 444)Controls (n = 1,423)Pa
Age (y), mean (SD)58.6 (8.7)55.2 (9.1)<0.0001
Postmenopausal, %77.061.4<0.0001
BMI, mean (SD)24.6 (3.4)24.4 (3.5)0.2804
Waist-to-hip ratio, mean (SD)0.820 (0.053)0.816 (0.054)0.1652
Education ≥ high school, %32.036.80.0668
Family history of colorectal cancer, %3.22.60.5326
Family history of any cancer, %30.626.60.0939
Personal history of inflammatory bowel disease, %0.90.60.5526
Personal history of diabetes, %7.96.60.3543
Ever smoked regularly, %2.53.20.4194
Ever drank alcohol regularly, %3.22.70.6478
Ever exercised regularly, %47.139.10.0030
Ever used aspirin regularly, %2.52.50.9509
Ever used hormone replacement therapy, %b3.84.20.7329
Fruit and vegetable intake, g/d, mean (SD)558.0 (292.6)569.9 (296.4)0.4595
Meat intake, g/d, mean (SD)48.9 (41.4)52.1 (50.2)0.1414
  • aP values (except for age) were derived from regression models with adjustment for age at sample collection.

  • bAmong postmenopausal women only.