As part of a bench-marking exercise in your neonatal network, the length of stay (LoS) for babies born at 30+0 to 34+6 weeks’ gestation was measured over a 12-month period (only babies who were inborn and admitted within the first 24 h and had their care on the same unit were included). Corrected gestational age at day of discharge was compared between the seven units.

The bench-marking results show variation of LoS in these babies from 35.5 weeks to 36.7 weeks with a network average LoS of 36.2 weeks. Although this is less than the UK mean LoS of 36.3 weeks, it is higher than the California average of 35.9 weeks.1 You decide to review the LoS in your own unit for this same defined group for the years 1995, 1998, 2001 and 2004. The median LoS for these years is fairly constant at 36.4, …