Factors | Model 1 | Model 2 | ||
---|---|---|---|---|
OR (95 % CI) | P value | OR (95 % CI) | P value | |
Gender | ||||
Female | ref | ref | ||
Male | 1.596(1.244,2.021) | <0.001 | 1.491(1.280,1.738) | <0.001 |
Maternal education | ||||
4-year university and above | ref | ref | ||
3-year college | 1.674(0.795,3.524) | 0.175 | 1.235(0.839,1.819) | 0.284 |
High school and equivalent | 3.051(1.492,6.240) | 0.002 | 2.090(1.437,3.038) | <0.001 |
Middle school and below | 5.511(2.612,11.630) | <0.001 | 3.554(2.381,5.303) | <0.001 |
Paternal education | ||||
4-year university and above | ref | ref | ||
3-year college | 0.960(0.576,1.599) | 0.874 | 0.929(0.689,1.253) | 0.630 |
High school and equivalent | 1.064(0.652,1.737) | 0.803 | 1.081(0.808,1.445) | 0.600 |
Middle school and below | 1.672(0.999,2.797) | 0.050 | 1.336(0.974,1.832) | 0.072 |
Maternal agea(mean, SD) | 0.921(0.884,0.961) | <0.001 | 0.948(0.923,0.974) | <0.001 |
Paternal agea(mean, SD) | 1.022(0.986,1.059) | 0.232 | 1.003(0.980,1.027) | 0.784 |
Whether the only child | ||||
Yes | ref | ref | ||
No | 1.082(0.842,1.390) | 0.539 | 1.014(0.863,1.192) | 0.863 |