Comparison of outcomes between the two cohorts, 2004–2006 and 2008–2010
| 2004–2006 | 2008–2010 | p-value | |
| Time in oxygen months# | 15 (0–66) | 5 (2–24) | 0.01 |
| Total hospital readmissions | 1 (0–17) | 1 (0–5) | 0.365 |
| Total respiratory-related readmissions | 1 (0–8) | 1 (0–5) | 0.948 |
| Length of respiratory admissions days | 4.5 (0–263) | 5 (0–105) | 0.717 |
| Total emergency department attendances | 0 (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.