Table 1

 Complications in 109 conservatively managed preterm neonates ⩽30 weeks’ gestation, requiring ventilation and surfactant treatment: comparison with data from the Vermont Oxford Network

Proportion (%) of neonates with complications
Conservative treatment*(N = 109)Medical treatment†(reference database)
*See Methods: Adjusment of ventilation and fluid restriction, and if PDA still present, ductal ligation carried out
†Range based on data from the Vermont Oxford Network and data on outcome with ibuprofen and/or indometacin, as provided by Orphan Europe (–26
Necrotising enterocolitis04–6
Intraventricular haemorrhage grade 376–7
Chronic lung disease818–28