Risk factor | Luminal-A | Luminal-B | HER-2 enriched | Triple-negative |
---|---|---|---|---|
OR (95% CI) p value | OR (95% CI) p value | OR (95% CI) p value | OR (95%CI) p value | |
Age at diagnosis | Â | Â | Â | Â |
< 40 years old | 1.00 (Ref) | 2.80 (1.46–5.32) 0.002 | 2.04 (1.89–4.64) 0.089 | 1.66 (0.88–3.13) 0.119 |
≥ 40 years old (Ref) |  |  |  |  |
Family history of BC | Â | Â | Â | Â |
Yes | 1.00 (Ref) | 0.94 (0.43–2.03) 0.940 | 0.59 (0.18–1.85) 0.364 | 1.17 (0.55–2.47) 0.353 |
No (Ref) | Â | Â | Â | Â |
Menarche | Â | Â | Â | Â |
Early < 12 years | 1.00 (Ref) | 1.20 (0.26–5.73) 0.812 | 1.36 (0.24–1.67) 0.724 | 0.35 (0.29–1.33) 0.352 |
Normal 13–14 years |  | 1.19 (0.52–1.90) 0.892 | 0.63 (0.26–1.50) 0.298 | 0.81 (0.41–1.48) 0.781 |
Late > 15 years (Ref) |  |  |  |  |
Menopausal status | Â | Â | Â | Â |
Pre-menopause | 1.00 (Ref) | 0.21 (0.10–0.41) 0.001 | 0.39 (0.17–0.89) 0.026 | 0.68 (0.35–1.30) 0.681 |
Post-menopause (Ref) | Â | Â | Â | Â |
Age at first full-term pregnancy | Â | Â | Â | Â |
< 30 years old | 1.00 (Ref) | 2.71 (1.18–4.17) 0.018 | 1.85 (0.68–2.51) 0.223 | 2.28 (1.02–4.07) 0.044 |
≥ 30 years old (Ref) |  |  |  |  |
Parity | Â | Â | Â | Â |
Nulliparous (Ref) | 1.00 (Ref) | 0.42 (0.13–1.33) 0.428 | 0.44 (0.15–1.95) 0.286 | 0.43 (0.14–1.36) 0.153 |
≥ 1 Child |  |  |  |  |
Breastfeeding | Â | Â | Â | Â |
Ever(Ref) | 1.00 (Ref) | 0.46 (0.22–0.95) 0.035 | 0.69 (0.26–1.81) 0.450 | 0.41 (0.20–0.85) 0.017 |
Never | Â | Â | Â | Â |