T1DM Reference  
  Primipara Multipara Primipara Multipara Interaction
Preeclampsia 1.0 0.35 (0.28-0.43) 1.0 0.36 (0.35-0.37) 0.76
Gestational hypertension 1.0 0.63 (0.37-1.05) 1.0 0.49 (0.46-0.52) 0.39
Major malformation 1.0 1.25 (0.88-1.77) 1.0 0.95 (0.92-0.99) 0.27
Perinatal mortality 1.0 0.22 (0.10-0.51) 1.0 0.44 (0.41-0.48) 0.32
Preterm birth 1.0 0.83 (0.70-1.00) 1.0 0.66 (0.65-0.68) 0.001
SGA 1.0 0.44 (0.29-0.68) 1.0 0.52 (0.51-0.52) 0.92
LGA 1.0 1.96 (1.71-2.25) 1.0 1.92 (1.89-1.95) 0.10
Late neonatal death 1.0 0.56 (0.12-2.60) 1.0 0.88 (0.69-1.13) 0.62
*Preterm birth : birth before 37 completed weeks. SGA/LGA: small/large for gestational age. Late neonatal death: death after the first week but within the first 28 days of life. All models include adjustment for mother’s country of birth, smoking before pregnancy, cohabit, maternal age, pre-pregnancy BMI, mode of delivery and previous adverse outcome. Interaction term: interaction between parity and T1DM, a p-value of < 0.05 indicates a significant interaction.
Table 4: Adjusted odds ratios, stratified for parity and diabetes status.