Saxena et al
| 1993 | 2003 | 2006 | |
|---|---|---|---|
| n | 87 | 156 | 113 |
| Gestational age | 27 (25–28) | 27 (25–28) | 28 (25–29) |
| Mortality | 34 | 21 | 17 |
| Received surfactant | 38 | 90.3 | 84.1 |
| Timing of first dose (mins) | 180 (121–297) | 9 (5–15) | 11 (7–39) |
| Ventilator days | 4 (0–9) | 6 (1–21) | 2.5 (0–7) |
| CPAP days | 2 (0–9) | 12 (4–20) | 10 (3–29) |
| 2>36 weeks PCA | 12.6 | 20 | 23.7 |
| Postnatal steroids | 20.7 | 1.3 | 4.4 |