Independent predictors of birthweight in term infants in multiple linear regression analysis (n=653)
| Variable | Estimated effect on birthweight (g) (95% CI) | p Value |
|---|---|---|
| Gestation (weeks) | 127 (101 to 153) | <0.001 |
| BMI (kg/m2) | 21 (19 to 36) | <0.001 |
| Gravidity | 48 (32 to 65) | <0.001 |
| Number of antenatal clinic visits | 33 (21 to 45) | <0.001 |
| Maternal height (cm) | 10 (5 to 16) | <0.001 |
| Male infant | 84 (27 to 141) | 0.004 |
| Smoking | −120 (−218 to −22) | 0.016 |
The estimated effect on birthweight is the change in birthweight (g) for the presence of a categorical predictor variable or a unit increase in a continuous variable.