• Laura M Enomoto, Deepika P Shrestha, Meredith B Rosenthal, Christopher S Hollenbeak, and Robert A Gabbay.
• The Pennsylvania State University, College of Medicine, Department of Medicine, 500 University Drive, Hershey, PA 17033, USA. Electronic address: lenomoto@hmc.psu.edu.
• J. Diabetes Complicat. 2017 Jan 1; 31 (1): 122-127.

AimsPatients with type 2 diabetes mellitus (type 2 DM) are at greater risk of poor hospital outcomes. The purpose of this study was to determine the impact of type 2 DM on 30-day hospital readmission and length of stay (LOS).MethodsWe studied all inpatient admissions in Pennsylvania during 2011 using data from the Pennsylvania Health Care Cost Containment Council. Outcomes included 30-day readmission and inpatient LOS. We estimated the impact of type 2 DM on readmission and LOS, and identified risk factors for readmission and prolonged LOS.ResultsAmong inpatient admissions, patients with diabetes were more likely to be readmitted (AOR=1.17, P<0.001) and have longer LOS (0.19days, P<0.001) compared to patients without diabetes. Among those with diabetes, several factors were associated with readmission, including demographics, source of admission, and comorbidities. Patients with diabetes were more likely to be readmitted for infectious complications (9.4% vs. 7.7%), heart failure (6.0% vs. 3.1%), and chest pain/MI (5.5% vs. 3.3%) than patients without diabetes.ConclusionsDiabetes is associated with risk of 30-day readmission and LOS, and several patient-specific factors are associated with outcomes for patients with diabetes. Future studies may target risk factors to develop strategies to reduce readmissions and LOS.Copyright © 2017 Elsevier Inc. All rights reserved.

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