Histological type (%) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
No. | Duct | Lob | Muc | Tub | Med | Other | Unsp | Paget | Sarc | |
Parity | ||||||||||
0 | 3251 | 80.4 | 5.8 | 2.0** | 1.1 | 1.1 | 1.0 | 6.7** | 1.3 | 0.6* |
≥ 1 | 19616 | 81.6 | 6.4 | 1.4 | 1.1 | 1.1 | 1.2 | 5.3 | 1.5 | 0.4 |
P-value* | 0.004 | |||||||||
Parous | ||||||||||
1 | 3493 | 81.3 | 5.8 | 2.0** | 1.4 | 0.8 | 1.3 | 5.7 | 1.3 | 0.4 |
2 | 8624 | 81.5 | 6.9 | 1.3 | 1.1 | 1.2 | 1.1 | 5.2 | 1.3 | 0.4 |
3 | 5123 | 81.9 | 6.2 | 1.5 | 1.1 | 1.1 | 1.1 | 5.3 | 1.4 | 0.3 |
≥ 4 | 2376 | 81.6 | 6.3 | 1.1 | 0.8 | 1.3 | 1.4 | 4.7 | 2.4** | 0.3 |
P-value a | 0.007 | |||||||||
OR, unadj.b | - | 1.0 | 0.87** | 0.88** | 1.1 | 1.0 | 0.95** | 1.2** | 0.88 | |
OR, adjust.b , c | - | 1.0 | 0.84** | 0.82** | 1.1 | 1.0 | 1.0 | 1.2** | 0.90 | |
Age at first birth (yr) d | ||||||||||
<20 | 2199 | 83.0 | 5.1(**) | 1.3 | 1.2 | 1.7** | 1.0 | 4.7 | 1.4 | 0.5 |
20 - 24 | 8610 | 82.0 | 6.2 | 1.4 | 1.2 | 1.1 | 1.2 | 5.1 | 1.4 | 0.4 |
25 - 29 | 6021 | 80.9 | 6.5 | 1.5 | 1.1 | 0.9 | 1.2 | 5.9** | 1.6 | 0.4** |
≥ 30 | 2782 | 80.4 | 7.9** | 1.6 | 0.9 | 1.0 | 1.3 | 5.0 | 1.5 | 0.4 |
P-value a | 0.007 | |||||||||
OR, unadj.b | - | 1.1** | 1.1 | 0.92 | 0.82** | 1.1 | 1.1 | 1.2 | 0.97 | |
OR, adjust.b,c | - | 1.1** | 0.98 | 0.84** | 0.87** | 1.1 | 1.1** | 1.1 | 0.98 |