Table 1

Perinatal and neonatal characteristics of the very low birth weight children during the first hospitalisation

BPD group n = 31No-BPD group n = 33
Values are expressed as mean (SD) [range] or n (%) unless indicated otherwise. SGA, small for gestational age; O2, oxygen; IVH, intraventricular haemorrhage.
*p<0.001, compared to no-BPD group; †p<0.01, compared to no-BPD group; ‡p<0.05, compared to no-BPD group.
Gestational age (wk)27 (2) [23–30]*29 (2) [25–35]
Birth weight (g)954 (201) [570–1300]†1127 (236) [605–1490]
Birth length (cm)35 (3) [30–40]†37 (3) [30–41]
Head circumference at birth (cm)25 (2) [21–28]*27 (2) [21–31]
Male19 (61%)21 (63%)
SGA5 (16%)‡14 (42%)
Prenatal corticosteroids10 (32%)13 (39%)
Postnatal corticosteroids17 (55%)*4 (12%)
Surfactant14 (45%)8 (24%)
Ventilator therapy29 (94%)†22 (67%)
    Duration (days), median (range)26 (0–89)†2 (0–44)
O2 supplementation31 (100%)31 (94%)
    Duration (days), median (range)61 (29–127)†23 (0–86)
Corrected gestational age at O2 withdrawal (wk)36 (4) [31–45]*32 (2) [28–38]
IVH (grade III–IV)8 (26%)‡2 (6%)