Clinical outcomes
| Rate (%) | p-value* | OR (CI95%) | ||
| Survival-without-morbidity | P2 | 53.4 | NS | 1.34(0.70–2.57)† |
| P1 | 46 | |||
| Mortality | P2 | 18.2 | NS | 1.05(0.45–2.45) |
| P1 | 17.5 | |||
| Chronic lung disease | P2 | 12.5 | <0.05 | 0.39(0.15–0.98) |
| P1 | 26.9 | |||
| Retinopathy (≥3) | P2 | 12 | NS | 1.31(0.41–4.15) |
| P1 | 9.4 | |||
| Necrotizing enterocolitis | P2 | 5.1 | <0.05 | 0.28(0.08–0.96) |
| P1 | 16.1 | |||
| Intraventricular haemorrhage (≥3) | P2 | 25 | NS | 0.90(0.43–1.88) |
| P1 | 27 |
P1 aggressive, P2 conservative
*Chi-square
†Adjusted for gestational age, sepsis and days on mechanical ventilation (logistic regression).