Table 1

Clinical and outcome variables for all subjects

N=57Median (range) or number (%)
Gestation (weeks) 27 (22–32)
Birthweight (g)892 (520–1870)
Sex (M/F) 28:29
Mode of delivery (vaginal:C-section) 28:29
Survivors 44 (77%)
Chronic lung disease 30 (53%)
Intraventricular haemorrhage
 Grade 1  9 (16%)
 Grade 2  8 (14%)
 Grade 3  6 (11%)
 Grade 4  9 (16%)
 All grades 32 (56%)
Retinopathy of prematurity
 Stage 1 11 (19%)
 Stage 2 11 (19%)
 Stage 3  2 (4%)
 All stages 24 (42%)