Multivariable analysis to determine the factors associated with chronic lung disease/mortality
| Variable | Adjusted OR (95% CI) | P value |
| Late-PPROM versus No-PPROM | 0.56 (0.43 to 0.72) | <0.001 |
| Latency >14 days vs ≤14 days | 2.58 (1.54 to 4.31) | <0.001 |
| Early-PPROM versus No-PPROM | 1.98 (1.26 to 3.10) | 0.003 |
| Latency >14 days vs ≤14 days | 1.92 (118 to 3.12) | 0.008 |
| GA 23–27 weeks vs 28–31 weeks | 9.45 (7.88 to 11.32) | <0.001 |
| Antenatal steroids | 0.69 (0.53 to 0.91) | 0.007 |
| Chorioamnionitis | 1.01 (0.82 to 1.26) | 0.896 |
| Multiple versus singleton | 0.92 (0.76 to 1.12) | 0.420 |
| Male versus female gender | 1.36 (1.14 to 1.61) | <0.001 |
| SGA versus AGA | 4.65 (3.52 to 6.15) | <0.001 |
AGA: BW ≥10th percentile. SGA: BW <10th percentile.
AGA, appropriate for gestational age; BW, birth weight; GA, gestational age; PPROM, prelabour preterm rupture of membranes; SGA, small for gestational age.