Table 2 Characteristics of VLBW infants in pre-QI and post-QI group
|  | Pre-QI phase (n = 270) | Post-QI phase (n = 480) | P* |
|---|---|---|---|
GA [weeks, Medians (Q1, Q3)] | 29.6 (28.3, 31.4) | 29.7 (28.3, 31.0) | 0.954 |
GA < 28 weeks, (%) | 47 (17.4) | 98 (20.4) | 0.316 |
BW [g, Medians (Q1, Q3)] | 1210 (1000, 1360) | 1200 (1000, 1368) | 0.937 |
BW < 1000 g, n (%) | 58 (21.5) | 117 (24.4) | 0.368 |
Sex (boy), n (%) | 150 (55.6) | 233 (48.5) | 0.065 |
SGA, n (%) | 40 (14.8) | 64 (13.3) | 0.573 |
Caesarean section, n (%) | 221 (81.9) | 373 (78.5) | 0.278 |
Multiple gestation (twins or more), n (%) | 57 (21.1) | 113 (23.5) | 0.445 |
Apgar score at 5 min < 7, n (%) | 40 (14.8) | 56 (11.7) | 0.219 |
Intubation at delivery room, n (%) | 80 (29.6) | 135 (28.1) | 0.662 |
Maternal hypertension, n (%) | 124 (45.9) | 182 (39.9) | 0.113 |
Antenatal use of full course of steroid, n (%) | 163 (64.2) | 273 (67.2) | 0.418 |