| Measurement | More than 2500g (n=2381) | LBW (Less than 2500g) (n=170) | |||||
| n(%) | n(%) | Univariate analysis Adjusted odds ratio (95CI) | P-value | Multivariable analysis Adjusted odds ratio (95CI) | P-value | ||
| Age (years) | <30 30-34 35-39 >40 | 434(18.2%) 790(33.2%) 858(36.0%) 299(12.6%) | 34(20.0%) 43(25.3%) 64(37.6%) 29(17.1%) | 1.44(0.90-2.29) 1.00(Reference) 1.37(0.92-2.04) 1.78(1.09-2.91) | 0.125 - 0.121 0.021 | 1.32(0.79-2.20) 1.00(Reference) 1.46(0.94-2.26) 1.97(1.15-3.39) | 0.295 - 0.089 0.014 |
| Prepregnancy BMI (kg/m2) | <18.5 18.5-24.9 >25 | 518(21.8%) 1739(73.0%) 124(5.2%) | 49(28.8%) 112(65.9%) 9(5.3%) | 1.47(1.03-2.08) 1.00(Reference) 1.13(0.56-2.27) | 0.031 - 0.739 | 1.42(0.96-2.11) 1.00(Reference) 0.78(0.36-1.69) | 0.079 - 0.527 |
| GWG (kg) | <7.0 7.0-8.9 9.0-11.9 >12.0 | 329(13.3%) 477(20.0%) 869(36.5%) 706(29.7%) | 60(35.3%) 35(20.6%) 52(30.6%) 23(13.5%) | 3.05(2.06-4.51) 1.23(1.79-1.91) 1.00(Reference) 0.54(0.33-0.89) | 0.001 0.367 - 0.017 | 2.76(1.78-4.29) 0.95(0.59-1.53) 1.00(Reference) 0.59(0.35-1.01) | 0.001 0.824 - 0.056 |
| GWD (weeks) | 36-37 38-39 40-41 | 131(5.5%) 1172(49.2%) 1078(45.3%) | 71(41.8%) 79(46.5%) 20(11.8%) | 8.04(5.57-11.62) 1.00(Reference) 0.28(0.17-0.45) | 0.001 - 0.001 | 9.00(6.06-13.38) 1.00(Reference 0.29(0.18-0.49) | 0.001 - 0.001 |
| Parity | primipara multipara | 1464(61.5%) 917(38.5%) | 116(68.2%) 54(31.8%) | 1.00(Reference) 0.74(0.17-0.45) | - 0.081 | 1.00(Reference) 0.57(0.39-0.83) | - 0.003 |
| Infant gender | male female | 1240(52.1%) 1141(47.9%) | 67(39.4%) 103(60.6%) | 1.00(Reference) 1.67(1.21-2.29) | - 0.002 | 1.00(Reference) 2.06(1.45-2.94) | - 0.001 |