Table 3.
Characteristics of infants in relation to the primary outcome BPD
| Characteristic | No BPD | BPD | P |
| Birth weight (g; median [range]) | 975 (532 to 1,360) | 695 (460 to 1,080) | < 0.005 |
| Gestational age < 27 weeks (n [%]) | 13 (38.2) | 15 (75) | 0.009 |
| Male (n [%]) | 19 (55.9) | 12 (60) | 0.497 |
| Sepsis (suspected or confirmed; n [%]) | 2 (5.9) | 3 (15.8) | 0.239 |
| PDA (suspected or definite; n [%]) | 24 (72.7) | 14 (73.7) | 0.603 |
| ROP (n [%]) | 13 (38.2) | 13 (68.4) | 0.03 |
| Supplemental oxygen (days; median [range]) | 31.5 (2 to 88) | 68 (37 to 91) | < 0.005 |
| Mechanical ventilation (days; median [range]) | 3 (0 to 38) | 37 (1 to 77) | < 0.005 |
BPD, bronchopulmonary dysplasia; ROP(Retinopathy of Prematurity, a disease that affects immature vasculature in the eyes of premature babies leading to significantly decreased vision). PDA (Patent Ductus Arteriosus, a persistent connection between the aorta and the pulmonary artery).