Table 1.
Demographic characteristics of infants stratified by severity of bronchopulmonary dysplasia (BPD).
| Total (n = 121) | No BPD (n = 61) | Mild-moderate BPD (n = 34) | Severe BPD (n = 26) | |
|---|---|---|---|---|
| GA, wk | 30 ± 3 (23–34) | 32 ± 1 (28–34) | 28 ± 2 (23–33)* | 26 ± 1 (23–28)*# |
| Birth weight, g | 1422 ± 513 (476–2504) | 1844 ± 323 (1064–2504) | 1183 ± 302 (630–2094)* | 851 ± 218 (476–1290) *# |
| Boys | 63 (52.1) | 35 (60.3) | 17 (50) | 9 (34.6) |
| PROM | 41 (33.9) | 19 (32.7) | 11 (32.3) | 11 (42.3) |
| Prenatal steroid | 71 (58.6) | 25 (43.1) | 28 (72.3) | 22 (84.6)# |
| Surfactant | 32 (26.4) | 0 (0) | 14 (41.1)* | 15 (57.7)* |
| Duration of positive-pressure ventilation, d | 39 ± 55 (0–420) | 6 ± 1 (0–31) | 43 ± 21 (18–90)* | 114 ± 78 (55–420) *# |
*p < 0.001 compared with the no BPD group; # p < 0.001 compared with the mild to moderate BPD group.
PROM, premature rupture of membrane.
Values were presented as means and standard deviations (ranges) or numbers (proportions, %).