In-hospital morbidities among infants surviving >12 hours in group I (birth from 1 January 1991 to 31 December 1994) and group II (birth from 1 January 1995 to 31 December 1998)
| Group I (n = 917) | Group II (n = 974) | p Value | |
|---|---|---|---|
| Values are percentages. n = 917 for group I and n = 974 for group II, except for IVH (836 and 912), cPVL (598 and 707), and BPD (541 and 597). | |||
| PDA, Patent ductus arteriosus; IVH 3/4, intraventricular haemorrhage grade 3 or 4; cPVL, cystic periventricular leucomalacia; BPD, bronchopulmonary dysplasia; PNS, postnatal steroids. | |||
| PDA | 57.0 | 54.4 | NS |
| NEC | 7.3 | 9.9 | 0.049 |
| Early sepsis | 3.4 | 3.1 | NS |
| Late sepsis | 45.3 | 44.1 | NS |
| IVH 3/4 | 35.5 | 36.0 | NS |
| cPVL | 10.5 | 7.5 | 0.0546 |
| BPD | 50.1 | 60.0 | 0.0008 |
| PNS | 41.1 | 57.7 | <0.0001 |