Table 4.
Multiple logistic regression analysis for risk factors of colorectal cancer by forward Wald method
| Risk factor | β coefficient | SE | Wald | P | Adjusted OR (95% CI) |
|---|---|---|---|---|---|
| Diabetes mellitus | |||||
| Present | 0.997 | 0.431 | 5.35 | 0.021 | 2.71 (1.16-6.30) |
| Absent | 1 (reference) | ||||
| Consumption of at least one serving of fruits | |||||
| Rarely | 1 (reference) | ||||
| 1-3 days per month | −0.246 | 0.775 | 0.101 | 0.751 | 0.78 (0.17-3.57) |
| Once a week | 0.178 | 0.627 | 0.081 | 0.776 | 1.19 (0.35-4.08) |
| 2-3 days in a week | −0.772 | 0.529 | 2.130 | 0.144 | 0.46 (0.16-1.30) |
| 4-6 days in a week | −1.158 | 0.490 | 5.581 | 0.018 | 0.31 (0.12-0.82) |
| Daily | −3.207 | 0.713 | 20.23 | 0.000 | 0.04 (0.01-0.16) |
| Consumption of at least one serving of vegetables | |||||
| 1 day in a week or less | 1 (reference) | ||||
| 2-3 days in a week | −0.462 | 1.380 | 0.112 | 0.775 | 0.66 (0.04-10.67) |
| 4-6 days in a week | −1.764 | 1.274 | 1.917 | 0.137 | 0.14 (0.01-1.85) |
| Daily | −2.741 | 1.226 | 5.00 | 0.027 | 0.061 (0.005-0.73) |
| BMI | |||||
| Underweight | 1 (reference) | ||||
| Normal weight | −0.187 | 0.500 | 0.708 | 0.82 (0.31-2.21) | |
| Overweight | 0.487 | 0.586 | 0.406 | 3.20 (0.51-5.12) | |
| Obese | 1.164 | 0.601 | 0.050 | 2.71 (1.16-6.3) |
BMI: Body mass index, SE: Standard error, OR: Odds ratio, CI: Confidence interval