Characteristics of the 46 study infants
| Characteristic | Survivors (n = 38) | Non-survivors (n = 8) | P |
|---|---|---|---|
| Gestational age (weeks), mean ± SD | 35.0 ± 4.5 | 37.4 ± 4.4 | 0.20 |
| Birth weight (g), mean ± SD | 2,310 ± 1042 | 2,838 ± 852 | 0.09 |
| ≤999 g | 1 (3%) | 1 (13%) | 0.32 |
| 1,000-1,499 g | 12 (37%) | 0 | 0.09 |
| ≥1,500 g | 25 (66%) | 7 (88%) | 0.40 |
| Male, n (%) | 27 (71%) | 6 (75%) | 1.00 |
| Outborn, n (%) | 6 (16%) | 2 (25%) | 0.61 |
| Apgar Score at 1 min, mean ± SD | 7 ± 2 | 7 ± 3 | 0.46 |
| Apgar Score at 5 min, mean ± SD | 8 ± 1 | 7 ± 3 | 0.71 |
| Initial temperature (°C), mean ± SD | 36.5 ± 0.8 3 (8%) | 36.8 ± 0.7 1.0 (13%) | 0.18 |
| Small for gestational age, n (%) | 3 (8%) | 1.0 (13%) | 1.00 |
| Oxygen Index, median (range) | 6.0 (1.8–40.8) | 25.3 (11.6–124.2) | <0.01 |
| Causes of respiratory disorder, n (%) | |||
| Respiratory distress syndrome | 18 (47%) | 1 (13%) | 0.12 |
| Meconium aspiration syndrome | 10 (26%) | 3 (38%) | 0.67 |
| Congenital pneumonia | 7 (18%) | 2 (25%) | 1.00 |
| Transient tachypnea of the newborn | 2 (5%) | 2 (25%) | 0.13 |
| Subgaleal/hemorrhage with shock | 1 (3%) | 0 | 1.00 |
| Length of stay, median (days) | 30.0 (8.3–99.6) | 1.9 (1.0–20.4) | <0.01 |