Table 3. Stratified analyses between rs12922061, rs2290203, rs2981578, and rs10474352 and breast cancer risk.
Characteristics | rs12922061 | Pb | Pc | rs2290203 | Pb | Pc | rs2981578 | Pb | Pc | rs10474352 | Pb | Pc | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OR(95%CI) | Pa | OR(95%CI) | Pa | OR(95%CI) | Pa | OR(95%CI) | Pa | |||||||||
Age (year) | 0.231 | 0.223 | 0.252 | 0.227 | 0.036 | 0.046 | 0.734 | 0.730 | ||||||||
≤40 | 1.073 (0.843, 1.366) | 0.565 | 1.314 (1.059, 1.631) | 0.013 | 0.705 (0.567, 0.877) | 0.002 | 0.869 (0.700, 1.077) | 0.199 | ||||||||
>40 | 1.271 (1.094, 1.476) | 0.002 | 1.124 (0.980, 1.288) | 0.095 | 0.919 (0.802, 1.054) | 0.229 | 0.908 (0.793, 1.039) | 0.161 | ||||||||
BMI | 0.503 | 0.468 | 0.889 | 0.813 | 0.032 | 0.035 | 0.882 | 0.879 | ||||||||
≤24 | 1.173 (1.008, 1.365) | 0.039 | 1.185 (1.031, 1.362) | 0.017 | 0.782 (0.682, 0.897) | 4.5×10−4 | 0.889 (0.775, 1.021) | 0.096 | ||||||||
>24 | 1.295 (1.022, 1.640) | 0.032 | 1.164 (0.945, 1.435) | 0.153 | 1.066 (0.856, 1.327) | 0.569 | 0.906 (0.737, 1.113) | 0.347 | ||||||||
Education level | 0.477 | 0.468 | 0.362 | 0.307 | 0.622 | 0.592 | 0.844 | 0.846 | ||||||||
Uneducated or primary school | 1.137 (0.951, 1.360) | 0.159 | 1.207 (1.024, 1.423) | 0.025 | 0.855 (0.724, 1.009) | 0.064 | 0.920 (0.783, 1.082) | 0.316 | ||||||||
High school or more | 1.254 (1.029, 1.527) | 0.025 | 1.078 (0.902, 1.288) | 0.412 | 0.804 (0.673, 0.961) | 0.016 | 0.898 (0.752, 1.073) | 0.237 | ||||||||
Age at menarche(year) | 0.164 | 0.872 | 0.529 | 0.918 | 0.646 | 0.310 | 0.200 | 0.131 | ||||||||
≤16 | 1.154 (1.000, 1.331) | 0.049 | 1.161 (1.022, 1.318) | 0.022 | 0.863 (0.759, 0.980) | 0.023 | 0.860 (0.757, 0.977) | 0.020 | ||||||||
>16 | 1.477 (1.113, 1.960) | 0.007 | 1.286 (0.975, 1.695) | 0.075 | 0.804 (0.609, 1.062) | 0.125 | 1.059 (0.813, 1.380) | 0.669 | ||||||||
Menopausal status | 0.792 | 0.836 | 0.441 | 0.407 | 0.201 | 0.200 | 0.634 | 0.641 | ||||||||
Premenopausal | 1.189 (1.012, 1.396) | 0.035 | 1.134 (0.984, 1.308) | 0.083 | 0.806 (0.698, 0.931) | 0.003 | 0.870 (0.755, 1.002) | 0.054 | ||||||||
Postmenopausal | 1.233 (0.996, 1.527) | 0.054 | 1.252 (1.025, 1.531) | 0.028 | 0.951 (0.780, 1.159) | 0.617 | 0.924 (0.758, 1.127) | 0.436 | ||||||||
Age at menopause (year)(postmenopausal women only) | 0.978 | 0.969 | 0.759 | 0.751 | 0.387 | 0.380 | 0.296 | 0.310 | ||||||||
<50 | 1.252 (0.859, 1.825) | 0.242 | 1.179 (0.824, 1.688) | 0.368 | 0.816 (0.572, 1.163) | 0.260 | 1.127 (0.795, 1.598) | 0.503 | ||||||||
≥50 | 1.244 (0.975, 1.587) | 0.079 | 1.261 (1.000, 1.589) | 0.050 | 0.980 (0.780, 1.231) | 0.862 | 0.887 (0.706, 1.113) | 0.300 | ||||||||
Years of menstruation(year) | 0.065 | 0.062 | 0.977 | 0.995 | 0.107 | 0.116 | 0.464 | 0.469 | ||||||||
<30 | 1.055 (0.871, 1.278) | 0.857 | 1.175 (0.988, 1.397) | 0.067 | 0.765 (0.643, 0.910) | 0.003 | 0.852 (0.714, 1.016) | 0.074 | ||||||||
≥30 | 1.345 (1.134, 1.595) | 0.001 | 1.171 (1.003, 1.368) | 0.045 | 0.927 (0.793, 1.083) | 0.339 | 0.929 (0.799, 1.079) | 0.335 | ||||||||
Age at first live birth (year) | 0.857 | 0.655 | 0.327 | 0.746 | 0.180 | 0.159 | 0.455 | 0.653 | ||||||||
≤25 | 1.205 (1.024, 1.418) | 0.024 | 1.115 (0.959, 1.297) | 0.156 | 0.801 (0.687, 0.933) | 0.004 | 0.928 (0.800, 1.078) | 0.329 | ||||||||
>25 | 1.175 (0.942, 1.465) | 0.152 | 1.264 (1.042, 1.532) | 0.017 | 0.951 (0.787, 1.150) | 0.606 | 0.847 (0.701, 1.023) | 0.085 | ||||||||
Parity | 0.544 | 0.583 | 0.827 | 0.727 | 0.799 | 0.782 | 0.985 | 0.923 | ||||||||
0-1 | 1.166 (0.969, 1.403) | 0.104 | 1.173 (0.994, 1.384) | 0.059 | 0.838 (0.709, 0.989) | 0.037 | 0.894 (0.757, 1.056) | 0.188 | ||||||||
≥2 | 1.263 (1.056, 1.509) | 0.010 | 1.204 (1.022, 1.420) | 0.027 | 0.864 (0.733, 1.018) | 0.081 | 0.892 (0.759, 1.047) | 0.163 | ||||||||
Breast feeding period (month) | 0.373 | 0.323 | 0.894 | 0.881 | 0.082 | 0.129 | 0.531 | 0.502 | ||||||||
<6 | 1.380 (1.025, 1.858) | 0.034 | 1.152 (0.878, 1.513) | 0.307 | 0.686 (0.515, 0.914) | 0.010 | 0.971 (0.739, 1.276) | 0.833 | ||||||||
≥6 | 1.176 (1.021, 1.355) | 0.025 | 1.176 (1.034, 1.337) | 0.013 | 0.890 (0.784, 1.011) | 0.073 | 0.878 (0.773, 0.996) | 0.043 | ||||||||
Family history of breast cancer | 0.996 | 0.994 | 0.274 | 0.051 | 0.239 | 0.007 | 0.402 | 0.171 | ||||||||
No | 1.209 (1.063, 1.374) | 0.004 | 1.155 (1.028, 1.298) | 0.015 | 0.832 (0.740, 0.935) | 0.002 | 0.888 (0.791, 0.996) | 0.042 | ||||||||
Yes | 1.206 (0.500, 2.905) | 0.677 | 2.926 (1.145, 7.479) | 0.025 | 3.463 (1.204, 9.961) | 0.021 | 1.687 (0.649, 4.383) | 0.283 |
Adjusted for age, age at menarche and family history of breast cancer.
P for heterogeneity.
P for interaction. P≤0.000446.