Relative Risk Estimates of Maternal and Neonatal Outcomes in Relation to BMI^a.

aBMI: body mass index bSGA and cLGA: small for gestational age and large for gestational age, defined as the < 10th percentile and > 90th percentile, respectively, of sex-specific reference curves dCS: cesarean section. Based on multiple logistic regression models adjusted for maternal age at birth, smoking, alcohol consumption, maternal height, social status defined by education, length of gestation, residential area (urban or rural) and gestational weight gain. **Significantly different from the estimate of the reference category (p < 0.01) *significantly different from the estimate of the reference category (p < 0.05). Relative Risk Estimates of Maternal and Neonatal Outcomes in Relation to BMIa.