• William A Berk, Robert D Welch, Phillip D Levy, Jamira T Jones, Crystal Arthur, Gloria J Kuhn, Jeffrey J King, Brooks F Bock, and Padraic J Sweeny.
• Emergency Department, Detroit Receiving Hospital and Department of Emergency Medicine, Wayne State University, Detroit, MI, USA.
• Ann Emerg Med. 2008 Nov 1;52(5):497-501.

Study ObjectiveWe assess the effect of emergency physicians' clinical experience on the propensity to commit a patient care error.MethodsSeven years of data from a single emergency department's peer review activities were reviewed for all patient care errors made by emergency physicians. Emergency physician clinical experience was defined as years since completion of residency training during the year each error was made. A repeated-measures log-linear model was constructed that predicted error count and the rate of errors over time, with a correction for number of patients treated by each physician.ResultsOf 829 cases reviewed during 7 years, there were 374 emergency physician errors identified. Mean emergency physician experience was 8.1+/-8.6 years. Emergency physicians with experience of 1.5 years or more were less likely to make an error (relative risk [RR]=0.66; 95% confidence interval [CI] 0.48 to 0.91) than those who were less experienced. Errors were not associated with emergency physician age (RR=1.01; 95% CI 0.99 to 1.03) or sex (RR=1.29; 95% CI 0.93 to 1.79).ConclusionEmergency physicians with less than 1.5 years of clinical experience may be more likely to commit errors than more experienced emergency physicians.

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