Table 7.
A subgroup comparison of smaller preterm infants between two groups.
| Groups | MISAs (n = 31) | EISAs (n = 20) | t | p |
|---|---|---|---|---|
| Gestational age, weeks** | 28.1 ± 1.2 | 28.4 ± 0.5 | 0.471 | 0.195 |
| Birth weight, g** | 1140.8 ± 187.6 | 1167.5 ± 203.7 | 0.271 | 0.786 |
| RDS* | 27 (87.1) | 20 (100.0) | 0.094 | |
| BPD* | 9 (29.0) | 14 (70.0) | 0.004 | |
| IVH* | 0.176 | |||
| Grades 3–4 | 3 (9.7) | 0 (0) | ||
| Grades 1–2 | 10 (32.3) | 4 (20.0) | ||
| White matter injury* | 2 (6.5) | 1 (5.0) | 0.830 | |
| PDA* | 9 (29.0) | 13 (65.0) | 0.011 | |
| Pneumonia* | 13 (41.9) | 7 (35.0) | 0.771 | |
| Clinical sepsis (early or late onset) * | 7 (22.6) | 5 (25.0) | 0.842 | |
| ROP* | 4 (12.9) | 5 (25.0) | 0.269 |
Data are expressed as the mean ± SD or number (%). Comparisons were performed with *Pearson χ2 or **Student's t test. MISA, minimally invasive surfactant administration; EISA, endotracheal intubation surfactant administration; RDS, respiratory distress syndrome; BPD, bronchopulmonary dysplasia; IVH, intraventricular hemorrhages; PDA, patent ductus arteriosus, ROP, retinopathy of prematurity; NEC, necrotizing enterocolitis.