Table 5.
Multivariable-adjusted odds ratios (95% CIs) for breast cancer across quartile categories of DRRDS, stratified by BMI.
| Quartiles of DRRDS | P-trend | ||||
|---|---|---|---|---|---|
| Q1 | Q2 | Q3 | Q4 | ||
| BMI < 25 | |||||
| No. of cases (%) | 98 (36.2) | 57 (21) | 55 (20.3) | 61 (22.5) | |
| No. of controls (%) | 87 (24.7) | 77 (21.9) | 113 (32.1) | 75 (21.3) | |
| Crude | 1 | 0.65 (0.42–1.02) | 0.43 (0.28–0.66) | 0.72 (0.46–1.12) | 0.02 |
| Model 1† | 1 | 0.55 (0.34–0.90) | 0.36 (0.22–0.57) | 0.63 (0.39–1.02) | 0.009 |
| Model 2‡ | 1 | 0.53 (0.32–0.89) | 0.32 (0.19–0.53) | 0.59 (0.36–0.98) | 0.006 |
| BMI ≥ 25 | |||||
| No. of cases (%) | 26 (32.9) | 21 (26.6) | 13 (16.5) | 19 (24.1) | |
| No. of controls (%) | 81 (23.3) | 78 (22.4) | 102 (29.3) | 87 (25) | |
| Crude | 1 | 0.83 (0.43–1.61) | 0.39 (0.19–0.82) | 0.68 (0.35–1.32) | 0.08 |
| Model 1 | 1 | 0.74 (0.37–1.50) | 0.30 (0.14–0.65) | 0.61 (0.30–1.24) | 0.04 |
| Model 2 | 1 | 0.75 (0.35–1.59) | 0.35 (0.16–0.80) | 0.66 (0.31–1.40) | 0.13 |
†
Model 1: Adjusted for age and energy intake.
‡
Model 2: Further adjusted for education, residency, family history of breast cancer, physical activity, marital status, smoking, alcohol consumption, supplement use, breast-feeding, and menopausal status.