Table 1.
Demographic and clinical characteristics of study infants
| Characteristics | Early group (n = 125) | Late group (n = 45) | P Value | |
|---|---|---|---|---|
| Infant Sex (%) | Female | 75 (60) | 40 | 0.02 |
| Male | 18 (40) | 60 | ||
| Gravidity (%) | G1 | 71 (56.8) | 28 (62.2) | |
| G2 | 21 (16.8) | 6 (13.3) | 0.3 | |
| G3 and more | 33 (26.4) | 11 (24.5) | ||
| Delivery Method (%) | NVD* | 40 (32.0) | 16 (35.6) | 0.4 |
| Cs** | 85 (68.0) | 29 (64.4) | ||
| Resuscitation after birth (%) | 91 | 100 | 0.3 | |
| Preeclampsia | 38 (30.6) | 8 (17.8) | ||
| Multiple pregnancy | 13 (10.5) | 11 (24.4) | ||
| Cause of preterm labor (%) | Preterm rupture of membrane | 6 (4.8) | 1 (2.2) | 0.2 |
| Placental abruption | 6 (4.8) | 3 (6.8) | ||
| Others | 62 (49.3) | 22 (48.8) | ||
| Surfactant administration (%) | 24 (19.20) | 10 (22.20) | 0.7 | |
| Birth weight (g) [mean (SD)] | 1335.4 (903.2) | 1233.6 (154.5) | 0.4 | |
| Gestational age (wk) [mean (SD)] | 29.1 (0.9) | 29.4 (1.3) | 0.4 | |
| First minute Apgar [mean (SD)] | 6.7 (1.6) | 6.4 (4.2) | 0.4 | |
| Fifth minute Apgar [mean (SD)] | 9.0 (5.7) | 8.2 (1.4) | 0.4 |
SD: standard deviation