Table 1.
Descriptive statistics.
| Cohort 1 n = 203 | Cohort 2 n = 98 | |||
|---|---|---|---|---|
| Moderate Preterm and Term (≥32 weeks GA) n = 151 | Very preterm (< 32 weeks GA) n = 52 | Very preterm (< 32 weeks GA) n = 98 | ||
| NEONATAL CHARACTERISTICS | ||||
| GA (weeks) | 38.3 (37.0–40.0) | 30.1 (28.3–31.3) | 29.3 (26.9–30.6) | |
| BW (g) | 3270 (2710–3630) | 1360 (1063–1463) | 1145 (788–1413) | |
| Sex (male, %) | 87 (57.6) | 25 (48.1) | 52 (53.1) | |
| Brain damage (%) | 1 (0.7) | 10 (19.2) | 12 (12.2) | |
| O2 duration (days) | 0 | 4 (1–15.8) | 2.38 (0.05–22.8) | |
| pH umbilical artery | 7.30 (7.26–7.33) | 7.32 (7.29–7.37) | 7.32 (7.28–7.36) | |
| NEC (%) | 0 | 0 | 3 (3.1) | |
| Sepsis (%) | 0 | 11 (21.2) | 13 (13.3) | |
| 5-min Apgar | 9 (9–9) | 7 (5.25–8) | 7 (6–8) | |
| Death (%) | 0 | 6 (11.5) | 2 (2.0) | |
| MATERNAL CHARACTERISTICS | ||||
| Age (years) | 32 (29–36) | 33 (28.3–36.0) | 33 (29–36) | |
| Amniotic infection (%) | 5 (3.3) | 13(25) | 20 (20.4) | |
| Preeclampsia (%) | 16 (10.6) | 20 (38.5) | 16 (16.3) | |
| PROM (%) | 14 (9.3) | 14 (26.9) | 28 (28.6) | |
| DM (%): | ||||
| Primary CS | 76 (50.3) | 26 (50) | 27 (27.6) | |
| Secondary CS | 29 (19.2) | 21 (40.4) | 59 (60.2) | |
| VD | 46 (30.5) | 5 (9.6) | 12 (12.2) | |
GA, gestational age; BW, birth weight; BD, brain damage (PIVH and/or PVL); NEC, necrotizing enterocolitis; PROM, premature rupture of membranes; DM, delivery mode; CS, cesarean section; VD, vaginal delivery. GA, BW, O2 duration, Apgar, pH and maternal age are presented as median and interquartile range.