The retrieval service for New South Wales present some data on their service.  Here.

A Cardiff and Vale early warning system to detect deterioration in children was sensitive but not specific when prospectively used on data from 1000 patients.  Here.

In an eight year study of mortality in a tertiary paediatric intensive care, risk of death from RSV significantly higher in those children with pre-existing morbidity, especially cardiac or respiratory.  Here.

In a trial of 29 children with bronchiolitis and hypercapnia, randomised to CPAP versus standard treatment with crossover at 12 hours, those getting CPAP had an average 1 kPa fall in CO2, and those who got CPAP first had a larger CO2 fall than those who got it second. Here.