PEDIATRICS Vol. 111 No. 3 March 2003, pp. 617-621
Hospital-Reported Medical Errors in Children
* Center for Health Services and Clinical Research, Children’s Research Institute, Children’s National Medical Center, Washington, DC, and George Washington University School of Medicine, Washington, DC
Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee
--> Context. Medical errors are an important problem for hospitalized adult inpatients. However, medical errors in children remain comparatively understudied, and published research has been relatively limited.
Objectives. To investigate the national rates of hospital-reported medical errors in pediatric inpatients over the period 1988–1997; and to determine the association of patient and hospital characteristics with the occurrence of hospital-reported medical errors in children.
Design, Setting, and Patients. A nonconcurrent cohort study of hospitalized nonnewborn pediatric patients in the United States 
18 years of age. Data from the Healthcare Cost and Utilization Project for the years 1988, 1991, 1994, and 1997 were used for these analyses.
Main Outcome Measure. The occurrence of hospital-reported medical errors.
Results. The national rate of hospital-reported medical errors in hospitalized children ranged from 1.81 to 2.96 per 100 discharges. These medical error rates were statistically lower in 1988, with the years 1991, 1994, and 1997 not being statistically different from each other. There were no consistent differences in the rates of medical errors when stratified by gender, race, payor status, or median household income of the patient’s zip code across years. There was, however, a statistically significant relationship between higher median household income and increasing medical error rates; this trend was consistent across all 4 years. Similarly, children with special medical needs or dependence on a medical technology also had significantly higher rates of hospital-reported medical errors. Although hospital size did not seem to be related to the rate of medical errors, private for-profit hospitals consistently reported lower rates, whereas urban teaching hospitals in all years but 1997 reported higher rates of medical errors.
Conclusions. These data highlight both the strengths and limitations of administrative data in the investigation of medical errors. Substantively, they suggest fruitful areas for additional and more detailed study, notably children with special medical needs.
Key Words: medical errors • pediatrics • children • iatrogenic injury • complications • administrative data
Abbreviations: ICD, International Classification of Diseases • HCUP, Healthcare Cost and Utilization Project • LOS, length of stay
Received for publication Jan 8, 2002; Accepted Jul 8, 2002.
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