Table 5.
Multiple regression analysis of infant BW and its correlations with maternal serum insulin, BMI before pregnancy, maternal height, parity and infant’s sex, and gestational age. (n = 125).
| Covariate | Unstandardized coefficients (B) | Standardized coefficients (β) | p value | 95% CIa for B |
|
|---|---|---|---|---|---|
| Lower bound | Upper bound | ||||
| Maternal serum insulin (mIU/L) | −2.531 | −0.084 | 0.342 | −7.781 | 2.720 |
| Maternal BMI before pregnancy (kg/m2) | 21.203 | 0.191 | 0.023* | 2.973 | 39.432 |
| Parity (primipara/multipara) | 197.023 | 0.240 | 0.005* | 60.93 | 333.11 |
| Sex | −30.030 | −0.037 | 0.669 | −168.76 | 108.70 |
| Maternal height (cm) | 14.188 | 0.207 | 0.014* | 2.928 | 25.45 |
| Gestational age (weeks) | 66.808 | 0.197 | 0.027* | 7.810 | 125.806 |
CI: confidence interval; BW: birth weight; BMI: body mass index.
*
Significance was set at alpha = 0.05.