Table 1.
Baseline characteristics of Study Participantsa
| Variables | Number of colorectal cancer cases, N (%) (n=16142) |
Number of colorectal cancer deaths, N (%) (n=3547) |
|
|---|---|---|---|
| Age at diagnosis, years, mean (SD) | 66.4 (9.8) | 66.6 (10.0) | |
| Age at diagnosis, years | |||
| <50 | 890 (5.5) | 197 (5.6) | |
| 50-59 | 2598 (16.1) | 591 (16.7) | |
| 60-69 | 6267 (38.8) | 1296 (36.5) | |
| 70-79 | 5146 (31.9) | 1147 (32.3) | |
| 80+ | 1241 (7.7) | 316 (8.9) | |
| Male | 8125 (50.3) | 1798 (50.7) | |
| Body Mass Index | |||
| Normal | 5189 (32.1) | 1137 (32.1) | |
| Overweight | 7041 (43.6) | 1494 (42.1) | |
| Obese | 3912 (24.2) | 916 (25.8) | |
| Ever smoker | |||
| No | 6940 (43.0) | 1527 (43.1) | |
| Yes | 8732 (54.1) | 1897 (53.5) | |
| Missing | 470 (2.9) | 123 (3.5) | |
| Alcohol consumption | |||
| Nondrinker (0-1 g/day) | 5580 (34.6) | 1350 (38.1) | |
| Moderate drinker (1.01-28 g/day) | 7643 (47.3) | 1561 (44.0) | |
| Heavy drinker (>28 g/day) | 2449 (15.2) | 553 (15.6) | |
| Missing | 470 (2.9) | 83 (2.3) |
SD = Standard Deviation
a
Age at diagnosis, sex, body mass index, ever smoking, and alcohol consumption, were measured by in-person or phone interviews, structured questionnaires, or both with the reference time for cohort studies as the time of enrollment.