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).

Cohen et al. Genome Biology 2007 8:R210   doi:10.1186/gb-2007-8-10-r210