Correspondence to

Background The aim of this study was to determine if the National Institute of Child Health and Human Development (NICHD) calculator, designed to predict mortality or neurosensory disability in infants 22–25 weeks ’ gestation, was valid for contemporary Australian infants. Method Outcome data at 2 years of age for 114 infants who were liveborn in Victoria, Australia, in 2005, between 22 and 25 completed weeks ’ gestation, weighing 401–1000 g at birth, and free of lethal anomalies, were entered into the NICHD online calculator. Predicted outcomes were then compared with the actual outcomes. Results Of the 114 infants, 99 (87%) were inborn an