Outcome OR (95% CI) | Week 37 (n=1185) | Week 38 (n=7227) | Week 39 (n=7656) | Week 40 (n=3069) | Week ≥41 (n=802) |
Adverse respiratory outcome | |||||
Respiratory distress syndrome | 5.94 (3.10 to 11.38) | 2.25 (1.31 to 3.88) | Reference | 1.98 (0.99 to 3.99) | 2.58 (0.95 to 7.04) |
Transient tachypnoea of the newborn | 4.41 (2.87 to 6.78) | 2.33 (1.69 to 3.21) | Reference | 1.97 (1.33 to 2.94) | 2.95 (1.72 to 5.08) |
Respiratory complications | 4.82 (3.35 to 6.94) | 2.26 (1.71 to 3.00) | Reference | 1.97 (1.39 to 2.79) | 2.91 (1.80 to 4.70) |
Neonatal infection | 3.68 (1.80 to 7.52) | 1.30 (0.73 to 2.30) | Reference | 2.00 (1.06 to 3.79) | 1.87 (0.63 to 5.50) |
hyperbilirubinaemia | 3.50 (2.12 to 5.78) | 1.25 (0.84 to 1.85) | Reference | 1.19 (0.72 to 1.99) | 0.80 (0.29 to 2.23) |
Treated hypoglycaemia | 3.85 (2.29 to 6.48) | 1.57 (1.05 to 2.35) | Reference | 1.39 (0.83 to 2.32) | 3.77 (2.09 to 6.80) |
Neonatal intensive care unit admission | 3.73 (2.84 to 4.89) | 1.38 (1.12 to 1.69) | Reference | 1.37 (1.05 to 1.77) | 1.52 (1.00 to 2.31) |
Hospitalisation ≥5 days | 7.51 (5.10 to 11.07) | 1.50 (1.05 to 2.15) | Reference | 1.87 (1.23 to 2.86) | 2.46 (1.32 to 4.57) |
OR, odd
The ORs were adjusted with maternal age, prepregnancy body mass index, education, insurance status, type of conception, maternal chronic medical conditions and pregnancy complications.