Table 1.
Baseline characteristics (mean or %) among cases of colorectal cancer and matched controls in the Women’s Health Study
| Characteristics | Cases (N=275) | Controls (N=275) | Pvalue |
|---|---|---|---|
| Age, year | 58.8 (8.3) | 58.8 (8.3) | matched |
| Race-Caucasian, % | 96.4 | 96.4 | matched |
| Body mass index, kg/m2 | 26.8 (6.0) | 26.3 (5.1) | 0.31 |
| Current smoking (%) | 9.8 | 11.3 | 0.57 |
| History of sigmoidoscopy/colonoscopy (%) | 11.3 | 10.2 | 0.66 |
| History of colorectal polyps (%) | 3.6 | 4.0 | 0.83 |
| Family history of colorectal cancer (%) | 12.0 | 9.82 | 0.38 |
| Postmenopause (%) | 74.2 | 75.7 | 0.13 |
| Postmenopausal hormone use (%) | 59.8 | 54.6 | 0.16 |
| Current use of multivitamins (%) | 36.7 | 37.8 | 0.79 |
| Physical activity (MET-hrs/week) | 15.4 (21.3) | 16.5 (18.6) | 0.53 |
| Calcium mg/d | 1045.8 (535.6) | 1060.6 (569.4) | 0.70 |
| Alcohol intake (g/day) | 5.0 (9.4) | 4.8 (11.0) | 0.78 |
| Plasma Hemoglobin A1C levels, % | 5.1 (0.6) | 5.2 (0.8) | 0.36 |
| Plasma adiponectin levels, ug/mL† | 6.00(4.26–7.95) | 6.24(4.40–8.56) | 0.31 |
Abreviations: g, grams;hr hours; mg, milligrams; MET, metabolic equivalent;
*
Information was obtained at the 12-month follow-up questionnaire. Mean is calculated for continuous variables
†
Median value (25th – 75th range).