Table 1.
Demographic and clinical characteristics of study populations
| Character | Phases | p | |
|---|---|---|---|
| I | II | ||
| Number of ventilated neonates | 62 | 81 | |
| Gender (male) | |||
| Number | 43 | 52 | |
| % | 69.3 | 64.1 | 0.52 |
| Gestation age (week) | |||
| < 37 Number (%) | 45 (72.5) | 66 (81.5) | 0.21 |
| - 30-37 | 20 (32.2) | 34 (41.9) | |
| - <30 | 25 (40.3) | 32 (39.6) | |
| > 37 Number (%) | 17 (27.5) | 15 (18.5) | |
| Mean ± SD | 32.18 ± 4.5 | 31.73 ± 4.3 | 0.57 |
| Birth weight (g) | |||
| ≤ 2500 Number (%) | 48 (77.4) | 63 (77.7) | 0.99 |
| - < 1500 | 28 (45) | 43 (53) | |
| > 2500 Number (%) | 14 (22.6) | 18 (22.3) | |
| Mean ± SD | 1898 ± 954 | 1803 ± 1074 | 0.59 |
| Mode of delivery (% C/S) | 32.2 | 43.2 | 0.18 |
| Days of mech. ventilation | |||
| Min | 5 | 5 | |
| Max | 51 | 35 | |
| Mean ± SD | 21.50 ± 7.6 | 10.36 ± 5.2 | 0.000 |
| Length of NICU (day) | |||
| Min | 7 | 10 | |
| Max | 63 | 45 | |
| Mean ± SD | 23.87 ± 10.3 | 22.8 ± 9.7 | 0.56 |
| Mortality Number (%) | 16 (25.8) | 14 (17.3) | 0.22 |
SD standard deviation, C/S caesarian section, NICU neonatal intensive care unit