Crude and adjusted* ORs; 96% CI for adverse perinatal outcome in pregnant women with T1DM and stratified on BMI
| T1DM | |||
| BMI 18.5–24.9 | BMI 25–29.9 | BMI ≥30 | |
| LGA infant | |||
| Crude | 1.0 | 1.13 (0.98 to 1.32) | 1.14 (0.95 to 1.37) |
| Adjusted | 1.0 | 1.18 (1.01 to 1.38) | 1.21 (1.00 to 1.47) |
| Major malformations | |||
| Crude | 1.0 | 0.93 (0.63 to 1.37) | 1.73 (1.15 to 2.58) |
| Adjusted | 1.0 | 0.92 (0.62 to 1.36) | 1.77 (1.18 to 2.65) |
| Pre-eclampsia | |||
| Crude | 1.0 | 1.17 (0.95 to 1.45) | 1.45 (1.13 to 1.86) |
| Adjusted | 1.0 | 1.21 (0.98 to 1.50) | 1.74 (1.35 to 2.25) |
| Preterm delivery | |||
| Crude | 1.0 | 1.23 (1.02 to 1.47) | 1.25 (1.00 to 1.56) |
| Adjusted | 1.0 | 1.22 (1.02 to 1.47) | 1.25 (1.00 to 1.56) |
| Perinatal mortality | |||
| Crude | 1.0 | 1.48 (0.71 to 3.08) | 1.14 (0.44 to 2.98) |
| Adjusted | 1.0 | 1.47 (0.70 to 3.03) | 1.08 (0.41 to 2.83) |
| Caesarean section | |||
| Crude | 1.0 | 1.38 (1.19 to 1.60) | 1.69 (1.40 to 2.04) |
| Adjusted | 1.0 | 1.37 (1.18 to 1.60) | 1.67 (1.38 to 2.03) |
| Neonatal overweight | |||
| Crude | 1.0 | 1.17 (0.98 to 1.40) | 1.35 (1.09 to 1.67) |
| Adjusted | 1.0 | 1.19 (0.99 to 1.42) | 1.36 (1.09 to 1.69) |
Reference group: type 1 diabetic women with normal pre-pregnancy BMI.
↵* Adjusted for ethnicity, maternal age, height, parity, smoking first trimester and chronic hypertension.
BMI, body mass index; LGA, large for gestational age; T1DM, type 1 diabetes.