Table 4 Relationship among reproductive factors and breast cancer stratified by the genetic score; odds ratios adjusted for propensity score, menopausal status and the remaining variables in the table
Variable | Category | Genetic score | OR (95% CI) |
|---|---|---|---|
Number of deliveries | 0 | Any value | 1 (reference) |
1–2 | 0 | 0.06 (0.01–0.72) | |
1 | 0.27 (0.12–0.62) | ||
2 | 0.82 (0.43–1.59) | ||
3 | 0.94 (0.35–2.53) | ||
4 | 2.64 (0.09–76.7) | ||
> 2 | 0 | 0.10 (0.01–1.18) | |
1 | 0.24 (0.10–0.58) | ||
2 | 0.43 (0.21–0.88) | ||
3 | 0.83 (0.29–2.38) | ||
4 | 2.90 (0.07–118) | ||
Age at menopause | < 50 years | 0 | 0.93 (0.18–4.69) |
1 | 0.51 (0.33–0.79) | ||
2 | 0.87 (0.62–1.22) | ||
3 | 0.95 (0.58–1.55) | ||
4 | 1.13 (0.17–7.41) | ||
≥ 50 years | Any value | 1 (reference) |