Any and hours per week of recreational physical activity and colon cancer incidence, by exercise level reported in 1982, number of cases and multivariate-adjusted RR and 95% CI, CPS II Nutrition Cohort men and women, 1992-1993 to 1999
| . | Exercise level reported in 1982 . | . | . | . | ||||
|---|---|---|---|---|---|---|---|---|
| . | None or slight . | . | Moderate or heavy . | . | ||||
| Recreational physical activity in the year before study enrollment (1991-1992) . | No. cases . | Multivariate-adjusted* RR (95% CI) . | No. cases . | Multivariate-adjusted* RR (95% CI) . | ||||
| Total | 233 | 707 | ||||||
| Recreational physical activity | ||||||||
| No activity | 38 | 1.00 (reference) | 80 | 1.00 (reference) | ||||
| Any activity† | 195 | 0.84 (0.59-1.20) | 627 | 0.87 (0.68-1.10) | ||||
| Recreational physical activity† (h/wk) | ||||||||
| No activity | 38 | 1.00 (reference) | 80 | 1.00 (reference) | ||||
| <2 | 92 | 0.90 (0.61-1.32) | 208 | 0.93 (0.72-1.21) | ||||
| 2-3 | 37 | 0.78 (0.49-1.23) | 115 | 0.85 (0.64-1.14) | ||||
| 4-6 | 43 | 0.83 (0.53-1.29) | 173 | 0.91 (0.69-1.19) | ||||
| ≥7 | 23 | 0.74 (0.44-1.25) | 131 | 0.74 (0.56-0.99) | ||||
| P for trend, with and without reference group | 0.28, 0.43 | 0.007, 0.01 | ||||||
| . | Exercise level reported in 1982 . | . | . | . | ||||
|---|---|---|---|---|---|---|---|---|
| . | None or slight . | . | Moderate or heavy . | . | ||||
| Recreational physical activity in the year before study enrollment (1991-1992) . | No. cases . | Multivariate-adjusted* RR (95% CI) . | No. cases . | Multivariate-adjusted* RR (95% CI) . | ||||
| Total | 233 | 707 | ||||||
| Recreational physical activity | ||||||||
| No activity | 38 | 1.00 (reference) | 80 | 1.00 (reference) | ||||
| Any activity† | 195 | 0.84 (0.59-1.20) | 627 | 0.87 (0.68-1.10) | ||||
| Recreational physical activity† (h/wk) | ||||||||
| No activity | 38 | 1.00 (reference) | 80 | 1.00 (reference) | ||||
| <2 | 92 | 0.90 (0.61-1.32) | 208 | 0.93 (0.72-1.21) | ||||
| 2-3 | 37 | 0.78 (0.49-1.23) | 115 | 0.85 (0.64-1.14) | ||||
| 4-6 | 43 | 0.83 (0.53-1.29) | 173 | 0.91 (0.69-1.19) | ||||
| ≥7 | 23 | 0.74 (0.44-1.25) | 131 | 0.74 (0.56-0.99) | ||||
| P for trend, with and without reference group | 0.28, 0.43 | 0.007, 0.01 | ||||||
Models included age, sex, education, exercise level in 1982, cigarette smoking, alcohol, red meat, folate, fiber, multivitamin use in 1982, and hormone replacement therapy (women).
Included walking, jogging/running, lap swimming, tennis or racquetball, bicycling/stationary bike, aerobics/calisthenics, and dancing.