Table 1.
Demographic and lifestyle characteristics of subjects
| Case | Control | P value | |
|---|---|---|---|
| N = 837 | N = 739 | ||
| Demographic characteristics | |||
| Sex women (%) | 41.3 | 45.5 | 0.099 |
| Age (%) | |||
| <55 | 29.4 | 37.4 | <0.001 |
| 55–64 | 37.0 | 36.4 | |
| 65≤ | 33.6 | 26.2 | |
| Education years (%) | |||
| <9 | 28.5 | 25.8 | 0.133 |
| 9–12 | 42.7 | 40.4 | |
| 13≤ | 28.8 | 33.8 | |
| Family history of CRC (%) | 5.9 | 1.7 | <0.001 |
| BMI (kg/m2), Mean(SD) | 23.3 (3.0) | 24.0 (3.1) | <0.001 |
| BMI at 2 years ago(kg/m2), Mean(SD) | 24.2 (3.1) | 24.2 (3.0) | 0.728 |
| Life style | |||
| Regular intake of multi-vitamina (%) | 16.3 | 17.1 | 0.675 |
| Smoking (%) | |||
| None | 54.4 | 63.7 | 0.001 |
| Ex | 14.3 | 11.7 | |
| Current | 31.3 | 24.6 | |
| Alcohol intake (%) | |||
| None | 48.5 | 57.4 | <0.001 |
| Ex | 8.7 | 4.9 | |
| Current | 42.8 | 37.7 | |
| Participate in vigorous activityb (%) | 27.5 | 31.4 | 0.103 |
| Intakes of food items | |||
| Red meat intake (times/week) (%) | |||
| <2 | 32.2 | 33.5 | 0.724 |
| 2–3 | 43.4 | 41.4 | |
| 4≤ | 24.4 | 25.1 | |
| Vegetable intake (times/week) (%) | |||
| <9 | 40.9 | 34.0 | 0.026 |
| 9–19 | 32.6 | 36.0 | |
| 20 ≤ | 26.5 | 30.0 | |
| Fruit intake (times/week) (%) | |||
| <5 | 33.8 | 29.1 | 0.005 |
| 5–7 | 44.1 | 41.6 | |
| 8≤ | 22.1 | 29.3 | |
aRegular intake of multi-vitamin ≥ 4 times/week
bParticipate in vigorous activity ≥ MET 6.0