Table 3.

Stratification analysis of the fiveSNPs and BC susceptibility.

variables	case	control	rs6420545		rs4801078		rs1942348		rs9636089
			OR (95%CI) a	P a	OR (95%CI) a	P a	OR (95%CI) a	P a	OR (95%CI) a	P a
			TT vs CT + CC		CC vs CT + TT		CC vs CT + TT		TT vs CT + CC
age
≤50	302	285	0.70 (0.46–1.05)	0.083	0.79(0.54–1.14)	0.206	1.16(0.81–1.67)	0.41	1.24 (0.87–1.78)	0.238
>50	182	199	1.50(0.90–2.52)	0.125	2.14 (1.33–3.45)	0.002	0.60(0.37–0.99)	0.045	0.57(0.35–0.92)	0.021
Age at menarche
≤13	152	201	0.95 (0.92–0.99)	0.005	0.69(0.42–1.13)	0.14	1.38(0.85–2.26)	0.196	1.19(0.74–1.93)	0.476
>13	332	283	1.46 (0.98–2.16)	0.061	1.52(1.06–2.19)	0.025	0.77(0.54–1.11)	0.162	0.83(0.58–1.19)	0.31
Age at menopause
≤50	352	337	0.91(0.64–1.32)	0.630	1.16 (0.83–1.62)	0.4	1.01(0.72-0.1.42)	0.946	1.03(0.74–1.44)	0.85
>50	132	147	1.13 (0.58–2.19)	0.726	1.13(0.62–2.06)	0.68	0.67(0.38–1.20)	0.18	0.66 (0.37–1.16)	0.147
No. of pregnancy
≤2	176	243	0.98 (0.58–1.66)	0.95	1.32 (0.82–2.12)	0.155	0.96(0.61–1.52)	0.866	0.86 (0.55–1.35)	0.512
>2	308	241	0.95(0.63–1.43)	0.807	1.08 (0.74–1.59)	0.679	0.89(0.61–1.31)	0.577	0.96(0.66–1.41)	0.848
No. of abortion
≤2	417	438	0.95(0.68–1.33)	0.776	1.16 (0.86–1.57)	0.339	0.91(0.68–1.24)	0.559	0.93(0.69–1.25)	0.622
>2	67	46	1.10(0.44–2.73)	0.843	1.13(0.46–2.77)	0.784	0.86(0.37–2.02)	0.729	0.84(0.36–1.98)	0.691
Breast-feeding
no	27	42	46.67 (2.46–884.21)	0.010	18.72(1.17–300.7)	0.039	0.56(0.16–1.96)	0.366	0.60(0.17–2.11)	0.422
yes	457	442	0.89 (0.64–1.23)	0.473	1.11 (0.82–1.49)	0.513	0.95(0.71–1.28)	0.735	0.94(0.70–1.27)	0.696
Family history
no	462	463	1.01(0.73–1.40)	0.947	1.21(0.90–1.64)	0.212	0.92(0.69–1.24)	0.599	0.90 (0.67–1.21)	0.473
yes	22	21	0.29(0.05–1.55)	0.147	0.52(0.10–2.80)	0.448	0.65(0.14–2.92)	0.573	1.33 (0.31–5.77)	0.701

^aPvalue of logistic regression analysis with adjusted for age, age at menarche, menopausal status, number of pregnancy and abortion, breast-feeding status, family history of BC in first-degree relatives(the stratified factor in each stratum excluded).