Comparison of outcomes between the two cohorts, 2004–2006 and 2008–2010

Time in oxygen months#15 (0–66)5 (2–24)0.01
Total hospital readmissions1 (0–17)1 (0–5)0.365
Total respiratory-related readmissions1 (0–8)1 (0–5)0.948
Length of respiratory admissions days4.5 (0–263)5 (0–105)0.717
Total emergency department attendances0 (0–1)1 (0–6)0.05

Data are presented as median (range), unless otherwise stated. #: one infant in each group had insufficient data on the length of time in long-term oxygen therapy, so were excluded from analysis.