Table 6.
Multivariable-adjusted ratios for BC across different categories of Smoking
| Smoking Categories | Non-smoker | Smoker | P trend | |
|---|---|---|---|---|
| OR | OR | 95% CI | ||
| All population | ||||
| Crude | 1.00 | 1.41 | 0.99–2.01 | 0.055 |
| Model I | 1.00 | 1.23 | 0.84–1.82 | 0.286 |
| Model II | 1.00 | 1.01 | 0.67–1.52 | 0.943 |
| Pre-menopause | ||||
| Crude | 1.00 | 0.57 | 0.12–2.64 | 0.474 |
| Model I | 1.00 | 0.47 | 0.09–2.53 | 0.411 |
| Model II | 1.00 | 0.47 | 0.08–2.71 | 0.384 |
| Post-menopause | ||||
| Crude | 1.00 | 1.40 | 0.97–2.03 | 0.073 |
| Model I | 1.00 | 1.31 | 0.87–1.98 | 0.193 |
| Model II | 1.00 | 1.08 | 0.70–1.65 | 0.726 |
Model I: Adjusted for age, residence, marital status, SES, education, family history of B. C, menopausal status, breast feeding, history of disease, supplement use, HEI score and physical activity. Model II: Further controlled for BMI.