ABSTRACT. Background. Many children receive their care at local hospitals outside of a large urban area. There may be differences in the length of stay (LOS) between children hospitalized in rural versus urban hospitals. This study compared the differences in LOS, conditional LOS (CLOS), odds of prolonged stay, and 21-day readmission rates for children with 19 medical conditions and 9 surgical procedures admitted to rural, community, and large urban hospitals.Methods. Discharge records for the hospitalizations of children 1 to 17 years of age were obtained from the New York Department of Public Health Statewide Planning and Research Cooperative System and the Pennsylvania Health Care Cost Containment Council for April 1996 to July 1998. The 19 medical and 9 surgical conditions were identified with the principal condition and procedure codes. Hospitals were classified into 1 of 5 geographic categories on the basis of United States ruralurban continuum codes, ie, large urban, suburban, moderate urban, small urban, or rural. LOS was defined as the period of time between hospital admission and discharge. Readmission rates were calculated for 21 days after discharge from the hospital. A prolonged stay for each condition was defined as any admission lasting beyond the prolongation point, or the day at which the rate of discharge began to decline, as determined with the Hollander-Proschan statistic. This aspect of LOS describes the ability of providers to treat uncomplicated cases of that specific principle diagnosis. CLOS, as a marker for the management of complicated cases, was defined as the LOS beyond the prolongation point. Cox and logistic regression models were developed to describe the geographic effects on the 4 outcome variables, after severity adjustment with 32 demographic and 11 comorbidity variables and adjustment for hospital clustering.Results M ore than 20% of children in the United States reside in rural communities, 1,2 and rural hospitals constitute 16% to 34% of all hospital discharges. Whether these children receive efficient treatment when hospitalized is not known. The adult literature indicates that there may be differences between rural and urban locations in the management of some adult diseases. Keeler et al 3 found that, for 5 medical conditions, patients treated at rural hospitals had excess mortality rates and worse quality of care, compared with patients treated at urban hospitals. Similar results were observed for the management of acute myocardial infarction 4,5 and depression. 6 These differences may center on the amount of technology needed to treat the patient, how quickly knowledge about the disease changes, and how critical specialist management is for appropriate treatment of the patient. 3 However, rural hospitals have been shown to give similar quality of care to adults hospitalized for treatment of community-acquired pneumonia 7,8 and for general surgical procedures. 9 Potential differences between rural and urban hospitals may influence the efficiency of care received by hosp...