Table 3. Odds ratios (ORs) for TNM classes in postmenopausal ductal carcinoma by reproductive factors.
| Reproductive factors | T1 | Tis* vr. T1 | T2–T4** vr. T1 | N0 | N1–N3 vr. N0 | M0 | M1 vr. M0 | ||||||||
| N | N | OR (95%CI) | P | N | OR (95%CI) | P | N | N | OR (95%CI) | P | N | N | OR (95%CI) | P | |
| Parity1 | |||||||||||||||
| 1 (Ref.) | 1,399 | 22 | 1.00 | 1,033 | 1.00 | 1,746 | 717 | 1.00 | 1,979 | 72 | 1.00 | ||||
| 0 | 830 | 20 | 1.54 (0.83–2.87) | 0.17 | 553 | 1.08 (0.95–1.25) | 0.25 | 1,115 | 402 | 0.92 (0.80–1.07) | 0.29 | 1,211 | 30 | 0.90 (0.58–1.41) | 0.65 |
| 2 | 3,519 | 71 | 1.32 (0.82–2.15) | 0.26 | 2,004 | 0.84 (0.76–0.93) | <0.01 | 4,247 | 1606 | 0.93 (0.84–1.03) | 0.17 | 4,699 | 105 | 0.67 (0.49–0.91) | 0.01 |
| 3 | 1,599 | 31 | 1.31 (0.75–2.28) | 0.34 | 958 | 0.85 (0.75–0.95) | <0.01 | 1,871 | 784 | 1.00 (0.89–1.13) | 0.95 | 2,083 | 55 | 0.74 (0.52–1.06) | 0.10 |
| ≥4 | 534 | 7 | 0.92 (0.39–2.18) | 0.85 | 440 | 1.03 (0.88–1.20) | 0.73 | 669 | 307 | 1.03 (0.88–1.21) | 0.73 | 799 | 30 | 0.84 (0.54–1.30) | 0.44 |
| Total | 7,881 | 151 | 4,988 | 9,648 | 3,816 | 10,771 | 292 | ||||||||
Bold type: 95% CI does not include 1.00. The ORs were adjusted for:
1. Age at diagnosis, region, and occupation.
2. Age at diagnosis, region, occupation, and parity.
*
Carcinoma in situ.
**
The number of cases for T2 (N = 4,133), T3 (484), and T4 (371).