Variables | β | SE | OR | 95%CI | p |
---|---|---|---|---|---|
Abnormal pregnancy history | |||||
 Yes | 0.143 | 0.106 | 2.964 | 1.130 ~ 4.355 | 0.002 |
Cesarean section history | |||||
 Yes | 0.120 | 0.129 | 1.742 | 1.112 ~ 2.941 | 0.023 |
First pregnancy | |||||
 Yes | 0.033 | 0.121 | 1.608 | 1.324 ~ 2.973 | 0.036 |
Education level | |||||
 Primary school | 0.458 | 0.650 | 1.601 | 1.114 ~ 1.903 | 0.027 |
 Junior school | 0.302 | 0.273 | 1.213 | 1.042 ~ 1.988 | 0.029 |
 Senior school | 0.918 | 0.188 | 0.593 | 0.103 ~ 0.814 | 0.133 |
 College | 0.433 | 0.132 | 0.602 | 0.140 ~ 1.592 | 0.095 |
Occupation | |||||
 Business and services | 0.411 | 0.435 | 0.334 | 0.280 ~ 1.982 | 0.145 |
 Farming | 1.048 | 0.102 | 0.235 | 0.034 ~ 1.273 | 0.138 |
 Others | 0.392 | 0.137 | 0.549 | 0.247 ~ 1.952 | 0.199 |
Monthly income (RMB) | |||||
  < 3000 | 0.450 | 0.352 | 1.455 | 1.042 ~ 2.984 | 0.005 |
 3000 ~ 6000 | 0.247 | 0.323 | 1.302 | 1.074 ~ 2.663 | 0.025 |
 60,001 ~ 9000 | 0.341 | 0.254 | 0.826 | 0.459 ~ 1.754 | 0.092 |
  > 9000 | 0.839 | 0.467 | 1.143 | 0.145 ~ 3.728 | 0.127 |