Table 1 Study group of 115 preterm infants
Birth weight (g), mean (SD) (range)1728 (618) (454–3810)
Gestational age (weeks), mean (SD) (range)31.6 (3.1) (24.0–36.0)
Male gender (%)52
Caesarean section (%)77
Mechanical ventilation (%)18
Umbilical artery pH < 7.1 (%)4
Five-minute Apgar score <7 (%)4
Antenatal steroids (%)52
Cause of preterm delivery (%)
    Preterm labour65
    Preterm rupture of membranes8
    Amniotic infection7
    Intrauterine growth retardation17
    Placental abruption4
    Pathological CTG19
Outcome data (%)
    Blood-culture proven sepsis4
    Intraventricular haemorrhage grade I or II3
    Intraventricular haemorrhage grade III or IV3
    Periventricular leucomalacia1
    Chronic lung disease1