Variables | Category | Risk ratio (95% CI) | P value |
Hypertension | Yes vs no | 0.88 (0.70 to 1.11) | 0.28 |
IUGR | Yes vs no | 1.88 (1.68 to 2.11) | 0.03 |
GA (weeks) | 25–32 vs 33–37 | 3.80 (2.43 to 5.96) | <0.01 |
GA, gestational age; IUGR, intrauterine growth restriction.