Multivariate analysis of variables related to survival of live births.
| Variable | OR of death (95% CI) | P value |
| Antenatal diagnosis | 3 (0.9 to 10) | 0.06 |
| iNO | 53 (13 to 224) | <0.0001 |
| Isolated additional anomaly | 3 (0.5 to 21) | 0.2 |
| Prostin | 0.6 (0.2 to 1.6) | 0.3 |
| ECMO | 3 (0.6 to 12.0) | 0.1 |
| Birth weight | 0.3 (0.1 to 0.7) | 0.008 |
| Gestation | 0.5 (0.7 to 1.1) | 0.5 |
ECMO, extracorporeal membrane oxygenation; iNO, inhaled nitric oxide.