Table 3.
Multivariate linear regression analysis of the influencing factors for the levels vitamin A, vitamin D, and vitamin E in cord blood.
| β | 95%IC | p-value | ||
|---|---|---|---|---|
| Vitamin A | ||||
| Maternal age | -0.50 | -3.304 | 1.543 | 0.474 |
| Gestational age | -0.86 | -15.712 | 4.834 | 0.298 |
| Gender (male=1) | 0.317 | 24.416 | 60.894 | <0.001*** |
| SVD (yes = 1) | -0.148 | -40.421 | 0.520 | 0.056 |
| Pre-pregnancy BMI (kg/m2) | 0.048 | -2.362 | 4.535 | 0.535 |
| Weight gain during pregnancy | 0.03 | -1.875 | 2.785 | 0.701 |
| Birth weight | 0.229 | 0.005 | 0.047 | 0.014* |
| Vitamin D | ||||
| Maternal age | 0.004 | -0.300 | 0.315 | 0.961 |
| Gestational age | -0.009 | -1.372 | 1.236 | 0.918 |
| Gender (male = 1) | 0.077 | -1.086 | 3.544 | 0.296 |
| SVD (yes = 1) | 0.050 | -1.799 | 3.397 | 0.545 |
| Pre-pregnancy BMI (kg/m2) | -0.077 | -0.645 | 0.23 | 0.950 |
| Weight gain during pregnancy | -0.068 | -0.42 | 0.172 | 0.409 |
| Birth weight | <0.001 | -0.003 | 0.003 | 1 |
| Vitamin E | ||||
| Maternal age | -0.034 | -27.557 | 17.037 | 0.643 |
| Gestational age | 0.144 | -13.074 | 176.178 | 0.091 |
| Gender (male = 1) | 0.002 | -165.384 | 170.621 | 0.976 |
| SVD (yes = 1) | -0.118 | -330.224 | 44.896 | 0.140 |
| Pre-pregnancy BMI (kg/m2) | 0.021 | 27.428 | 360.097 | 0.788 |
| Weight gain during pregnancy | 0.133 | -3.277 | 39.649 | 0.096 |
| Birth weight | -0.213 | -0.409 | -0.026 | 0.026* |
Multivariate linear regression analysis was used with adjustments for maternal age, mode of delivery, gestational age, sex, pre-pregnancy BMI, birth weight and weight gain during pregnancy. Values in bold are significant at p <0.05.SVD, spontaneous vaginal delivery; BMI, body mass index. *p < 0.05, ***p < 0.001.