LOS
Although the length of hospitalization is an important aspect of RSV bronchiolitis, it has not been well studied. Mean LOS varies greatly, ranging from 2-3 days in the USA to 5-6 days in Europe and low-income countries. A recent study investigating the correlation between CRP levels and RSV bronchiolitis severity found no association with prolonged hospitalization. However, that study had a relatively small cohort with a relatively long mean hospitalization length of 5 days. Our study, on the other hand, found that children with elevated CRP had an average extended hospitalization length of half a day. In a multivariable model, children in the higher-CRP group had a 1.5 times higher risk of being hospitalized for an extended period (75th percentile, or 4.3 days).