Table 2.
The Estimated Odds Ratio and Confidence Interval for Oral Contraceptives Use with Colorectal Cancer Risk among Moroccan Women in a Case Control Study
| Cases | Controls | OR1 (95% CI) | OR2 (95% CI) | |
|---|---|---|---|---|
| Used | ||||
| Never used | 52 | 32 | 1.00 | 1.00 |
| Ever used | 98 | 118 | 0.51 (0.31-0.85) | 0.57 (0.36-0.92) |
| P-value | 0.01 | 0.017 | ||
| First use | ||||
| ≤24 | 56 | 71 | 0.49 (0.28-0.86) | 0.52 (0.31-0.89) |
| >24 | 42 | 47 | 0.55 (0.3-1.01) | 0.61 (0.38-1.12) |
| P-value | 0.033 | 0.039 | ||
| Last use | ||||
| ≤10 | 50 | 59 | 0.52 (0.29-0.93) | 0.57 (0.35-1.07) |
| >10 | 48 | 59 | 0.5 (0.28-0.9) | 0.62 (0.34-1.02) |
| P-value | 0.036 | 0.044 | ||
| Duration of use | ||||
| ≤8 | 67 | 69 | 0.6 (0.34-1.04) | 0.61 (0.36-1.08) |
| >8 | 31 | 49 | 0.39 (0.21-0.73) | 0.43 (0.26-0.79) |
| P-value | 0.012 | 0.016 |
OR1, Crude odds ratio adjusted only for age (±3 years); OR2, adjusted for: educational level, residency, marital status, BMI, physical activity, total energy intake, red meat consumption, fiber intake, calcium intake, and vitamin D intake. First use, last use, and duration of use are in years.