Table 1

Comparison of baseline and neonatal characteristics of infants who had received a BSID-II testing versus infants who survived to follow-up but who did not receive a BSID-II testing
BSID-II(n = 684) No BSID-II(n = 160)
N (%) N (%) p-value§
Median(IQR) Median(IQR)
Inborn 654 (96%) 144 (90%) 0.005
Male gender 362 (53%) 89 (56%) 0.54
Gestational age [weeks] 26.7 (25.9-27.3) 27 (26.1-27.6) 0.007
Birth weight [gram] 855 (730–990) 940 (800–1100) <0.001
SGA 52 (8%) 7 (5%) 0.15
Singleton 487 (71%) 121 (76%) 0.26
Antenatal corticosteroids (completed) 441 (69%) 99 (65%) 0.29
Caesarean delivery 552 (81%) 117 (73%) 0.028
SES score 6 (4–8) 6 (4–8) 0.72
Umbilical artery pH 7.31 (7.25-7.35) 7.30 (7.23-7.34) 0.17
PDA 311 (46%) 62 (39%) 0.12
PDA ligation 55 (8%) 15 (9%) 0.58
Mechanical ventilation 505 (79%) 109 (73%) 0.14
Mechanical ventilation [days] 4 (1–10) 4 (0–8) 0.20
Bronchopulmonary dysplasia 139 (21%) 18 (11%) 0.008
IVH > 2 46 (7%) 8 (5%) 0.42
Major brain injury 61 (9%) 10 (6%) 0.27
ROP stage 3 or higher 35 (5%) 8 (6%) 0.77
Proven sepsis 171 (25%) 32 (20%) 0.18
Necrotizing enterocolitis 18 (3%) 2 (1%) 0.30

§ p-value of Chi-square test (for ratios) and p-value of Mann–Whitney U test (for linear variables); IQR, interquartile range; IVH, intraventricular haemorrhage; NEC, necrotizing enterocolitis; PDA, persistent ductus arteriosus; ROP, retinopathy of prematurity; SES, socioeconomic score; SGA, small for gestational age (<10th percentile).

Schlapbach et al.

Schlapbach et al. BMC Pediatrics 2012 12:198   doi:10.1186/1471-2431-12-198

Open Data