Table 4. Odds ratios (ORs) for TNM classes in postmenopausal lobular 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.)	246	3	1.00		303	1.00		404	164	1.00		459	19	1.00
0	146	2	1.04 (0.17–6.49)	0.96	152	0.95 (0.72–1.27)	0.75	216	82	0.98 (0.71–1.35)	0.91	229	6	0.74 (0.29–1.92)	0.54
2	618	11	1.61 (0.44–5.93)	0.47	555	0.77 (0.62–0.94)	0.01	858	320	0.90 (0.72–1.13)	0.37	950	28	0.75 (0.41–1.36)	0.34
3	318	6	1.57 (0.38–6.45)	0.53	277	0.72 (0.57–0.91)	0.01	430	178	0.94 (0.73–1.22)	0.66	471	19	1.01 (0.52–1.94)	0.98
≥4	92	4	2.83 (0.6–13.32)	0.19	130	1.04 (0.75–1.44)	0.80	138	78	1.20 (0.85–1.68)	0.30	181	6	0.72 (0.28–1.85)	0.49
Total	1,420	26			1,417			2,046	822			2,290	78

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 = 1,106), T3 (236), and T4 (75).