Association among Emergency Department Volume Changes, Length of Stay, and Leaving Before Treatment Complete.

The authors examined the association between the size of an emergency department (ED), volume increases over time, length of stay (LOS), and left before treatment complete (LBTC). EDs participating in the Emergency Department Benchmarking Alliance providing at least two years of data from 2004 to 2011 were included in the analysis. The impact of volume on LOS and LBTC varied depending on annual ED volume. Based on this, EDs can anticipate better how changes in volume will impact patient throughput in the future.