Characteristics | Model 1 | Model 2 | Model 3 | Model 4 |
---|---|---|---|---|
Ethnic groups (MinorityRef) | ||||
 Hans | 0.99 | 0.87 | 0.72 | 0.62 |
(0.47,2.11) | (0.41,1.88) | (0.33,1.59) | (0.28,1.37) | |
Age at first delivery (≤24yearRef) | ||||
  > 24 | 1.40* | 1.39* | 1.34* | 1.26 |
(1.06,1.84) | (1.05,1.84) | (1.01,1.79) | (0.94,1.68) | |
Education (Primary school and belowRef) | ||||
 Junior school | 2.13* | 2.08* | 1.78 | 1.71 |
(1.16,3.92) | (1.12,3.83) | (0.95,3.33) | (0.91,3.21) | |
 High school | 3.16*** | 2.99** | 2.52** | 2.43* |
(1.66,6.01) | (1.55,5.76) | (1.29,4.92) | (1.24,4.76) | |
 College and above | 4.20*** | 3.30** | 2.67* | 2.57* |
(2.03,8.69) | (1.56,6.99) | (1.24,5.75) | (1.19,5.55) | |
Hukou (RuralRef) a | ||||
 Urban | 0.89 | 0.78 | 0.78 | 0.82 |
(0.56,1.41) | (0.49,1.25) | (0.49,1.25) | (0.51,1.33) | |
Household monthly income(Q1Ref) b | ||||
 Q2 |  | 1.43* | 1.44* | 1.48* |
(1.01,2.04) | (1.01,2.06) | (1.03,2.12) | ||
 Q3 |  | 1.32 | 1.26 | 1.30 |
(0.90,1.93) | (0.86,1.86) | (0.88,1.92) | ||
 Q4 |  | 1.92** | 1.87** | 2.01** |
(1.25,2.95) | (1.21,2.89) | (1.30,3.13) | ||
Kinds of insurances (0Ref) | ||||
 1 |  | 1.04 | 1.05 | 0.98 |
(0.67,1.61) | (0.68,1.62) | (0.63,1.53) | ||
  ≥ 2 |  | 0.75 (0.45,1.26) | 0.72 (0.43,1.21) | 0.73 (0.43,1.23) |
Maternity insurance (NoRef) c | ||||
 Yes |  | 2.12** | 2.18** | 2.01** |
(1.35,3.33) | (1.39,3.44) | (1.28,3.18) | ||
Maternal health education (NoRef) d | ||||
 Yes |  |  | 1.10 | 1.04 |
(0.83,1.45) | (0.78,1.38) | |||
Maternal health records (NoRef) e | ||||
 Yes |  |  | 2.48*** | 2.44*** |
(1.64,3.74) | (1.61,3.69) | |||
Migration range (Across ProvinceRef) | ||||
 Across prefectural city |  |  |  | 1.52** |
(1.14,2.02) | ||||
 Across county |  |  |  | 2.57* |
(1.14,5.81) | ||||
Migration reasons | ||||
 (Working or doing businessRef) |  |  |  |  |
  Accompanying |  |  |  | 1.15 |
(0.81,1.63) | ||||
  Others |  |  |  | 1.97 |
(0.56,6.97) | ||||
Migration experience before pregnancy | ||||
 (N0Ref) |  |  |  |  |
 Yes |  |  |  | 1.37* |
(1.03,1.81) |