Guttmann, A., Schull, M.J., Vermeulen, M.J., & Stukel, T.A. (2011). Association between waiting times and short term mortality and hospital admission after departure from emergency department: population based cohort study from Ontario, Canada. British Medical Journal. Retrieved from http://www.bmj.com/content/342/bmj.d2983.abstract
“Objective: To determine whether patients who are not admitted to hospital after attending an emergency department during shifts with long waiting times are at risk for adverse events.
Conclusions: Presenting to an emergency department during shifts with longer waiting times, reflected in longer mean length of stay, is associated with a greater risk in the short term of death and admission to hospital in patients who are well enough to leave the department. Patients who leave without being seen are not at higher risk of short term adverse events.”