A study published in the Annals of Emergency Medicine examined the relationship between exogenous-level predictors and performance on 4 emergency department (ED) throughput measures approved by the National Quality Forum: median ED length of visit for admitted and discharged patients, median waiting time, and rate of left without being seen. The authors were seeking to find predictors for benchmarking and public reporting. This was a study of 424 US hospitals that reported data to the National Hospital Ambulatory Care Survey in 2008 to 2009. Results from the study found that most exogenous variables, including ED volume, Metropolitan Statistical Area, teaching hospital status, age mix, and case mix, demonstrated significant association with waiting times and lengths of visit. Older age and a higher proportion of respiratory complaints were associated with differences in rates of left without being seen. The study concluded that several exogenous factors outside of a hospital’s control are associated with National Quality Forum–approved ED performance measures, which will have important implications for future benchmarking and public reporting of these data.
Study finds factors outside of hospital's control impact ED performance
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