| Hospital mortality in premature infants* |
0.68 [0.52 to 0.90] |
| Hospital mortality in infants ≤28 weeks’ gestation† |
0.70 [0.51 to 0.95] |
| Cardiorespiratory support at resuscitation |
0.89 [0.71 to 1.11] |
| Intubation in delivery room |
0.96 [0.82 to 1.13] |
| Severe intraventricular hemorrhage |
0.87 [0.59 to 1.27] |
| Periventricular leukomalacia |
0.71 [0.39 to 1.27] |
| Mechanical ventilation |
0.95 [0.84 to 1.07] |
| Chronic lung disease ≥36 weeks |
1.02 [0.93 to 1.12] |
| Necrotizing enterocolitis |
0.88 [0.65 to 1.18] |
| Late-onset sepsis |
0.95 [0.80 to 1.13] |
| Severe retinopathy of prematurity |
0.74 [0.51 to 1.07] |
| Peak hematocrit, % |
MD: 2.73 [1.94 to 3.52] |
| Blood transfusion |
0.81 [0.74 to 0.87] |
| Polycythemia (hematocrit >65%) |
2.65 [1.61 to 4.37] |
| Peak bilirubin, μmol/L |
MD: 4.43 [1.15 to 7.71] |