Table 2.
Multivariate linear regression analysis of the influencing factors on birth weight.
| β | 95%IC | p-value | ||
|---|---|---|---|---|
| Maternal age | 0.058 | 0.285 | -7.394 | 0.285 |
| Gestational age | 0.480 | 207.516 | 323.76 | <0.001*** |
| Gender (male = 1) | -0.092 | -236.166 | 19.283 | 0.096 |
| SVD (yes = 1) | 0.277 | 193.034 | 455.842 | <0.001*** |
| Pre-pregnancy BMI (kg/m2) | 0.260 | 29.676 | 73.567 | <0.001*** |
| Weight gain during pregnancy | 0.258 | 19.567 | 49.513 | <0.001*** |
| Vitamin A | 0.146 | 0.320 | 2.230 | 0.009* |
| Vitamin D | 0.011 | -7.117 | 8.711 | 0.843 |
| Vitamin E | -0.135 | -0.283 | -0.125 | 0.015* |
Multivariate linear regression analysis was used with adjustments for maternal age, mode of delivery, gestational age, sex, pre-pregnancy BMI, weight gain during pregnancy and fat-soluble vitamins. Values in bold are significant at p <0.05.SVD, spontaneous vaginal delivery; BMI, body mass index. *p < 0.05, ***p < 0.001.