| Pre-pregnancy BMI | ||||||
| OR (95% CI) | 0.99 (0.98 to 1.00) | 0.99 (0.98 to 1.00) | 1.04 (1.03 to 1.06) | 1.04 (1.03 to 1.06) | 0.95 (0.94 to 0.96) | 0.95 (0.94 to 0.96) |
| n | 17 113 | 17 113 | 11 989 | 11 989 | 11 989 | 11 989 |
Total effect models are adjusted for potential confounding variables (age, ethnicity, maternal education, smoking during pregnancy, alcohol consumption during pregnancy and siblings). Direct effect models are further adjusted for potential mediating variables (gestational diabetes, delivery method, labour complications, gestational age and birth weight).