Table 2.
Baseline maternal and neonatal characteristics.
| Neonatal characteristics | RAM cannula (n = 112) | Hudson prong (n = 117) | p value |
|---|---|---|---|
| Gestationalage in weeksa | 31.4 ± 1.7 | 31.4 ± 1.6 | 0.96 |
| Birth weight in gramsa | 1491 ± 321 | 1531 ± 394 | 0.41 |
| IUGRb | 29 (25.9) | 31 (26.5) | 0.92 |
| Gestation age stratab | |||
| 28–30 weeks | 33 (29.5) | 34 (29.1) | 0.95 |
| 31–34 weeks | 86 (71) | 88 (69) | |
| Male sexb | 65 (58) | 67 (57.3) | 0.91 |
| Apgar score at 5 minc | 8 (7–8) | 8 (8–8) | 0.49 |
| SNAPPE-II scorec | 5 (1.25–5) | 5 (0–5) | 0.87 |
| Any antenatal steroidb | 110 (98.2) | 115 (98.3) | 0.97 |
| Caesareanb | 96 (85.7) | 108 (92.3) | 0.11 |
| Singletonb | 57 (50.9) | 72 (61.5) | 0.25 |
| Respiratory Distress Syndromeb | 68 (60.7%) | 77 (65.8%) | 0.42 |
| Age at enrolment (h)a | 0.48 ± 0.16 | 0.47 ± 0.09 | 0.36 |
| SAS score at randomizationc | 5 (5–6) | 5 (5–5) | 0.35 |
| Post-randomization surfactantb | 60 (53.6) | 67 (57.3) | 0.57 |
| FiO2 at enrolmentc | 0.3 (0.3–0.3) | 0.3 (0.25–0.3) | 0.5 |
| Pressure at enrolmentc | 5 (5–5) | 5 (5–5) | 0.43 |
| Age at 1st dose surfactant (h)c | 1 (0.75–1) | 1 (0.75–1) | 0.83 |
| Maximum FiO2 on CPAPc | 0.3 (0.3–0.3) | 0.3 (0.25–0.3) | 0.54 |
| Maximum CPAP (cmH20)c | 6 (5–6) | 5 (5–6) | 0.68 |
IUGR intrauterine growth restriction, SNAPPE-II score for neonatal acute physiology with perinatal extension-II, SAS Silverman Anderson score, FiO2 fraction of inspired oxygen, CPAP continuous positive airway pressure.
aMean ± standard deviation.
bn (%).
cMedian (inter quartile range).