title: Risk factors associated with 30-day readmission and length of stay in patients with type 2 diabetes.
abstract: Patients 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).
  
  
  
  We 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.
  
  
  
  Among 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.
  
  
  
  Diabetes 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.
authors.affiliation: The Pennsylvania State University, College of Medicine, Department of Medicine, 500 University Drive, Hershey, PA 17033, USA. Electronic address: lenomoto@hmc.psu.edu.
authors.forename: Laura M
authors.initials: LM
authors.lastname: Enomoto
authors.affiliation: The Pennsylvania State University, College of Medicine, Department of Medicine, 500 University Drive, Hershey, PA 17033, USA. Electronic address: dshrestha2@lghealth.org.
authors.forename: Deepika P
authors.initials: DP
authors.lastname: Shrestha
authors.affiliation: Harvard School of Public Health, Health Policy and Management, 677 Huntington Avenue, Boston, MA 02115, USA. Electronic address: mrosenth@hsph.harvard.edu.
authors.forename: Meredith B
authors.initials: MB
authors.lastname: Rosenthal
authors.affiliation: The Pennsylvania State University, College of Medicine, Department of Medicine, 500 University Drive, Hershey, PA 17033, USA. Electronic address: chollenbeak@psu.edu.
authors.forename: Christopher S
authors.initials: CS
authors.lastname: Hollenbeak
authors.affiliation: Joslin Diabetes Center, One Joslin Place, Boston, MA 02215, USA. Electronic address: robert.gabbay@joslin.harvard.edu.
authors.forename: Robert A
authors.initials: RA
authors.lastname: Gabbay
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015897:Comorbidity; D048909:Diabetes Complications / Q000191:economics / Q000453:epidemiology* / Q000628:therapy; D003924:Diabetes Mellitus, Type 2 / Q000150:complications* / Q000191:economics / Q000453:epidemiology* / Q000628:therapy; D005260:Female; D017048:Health Care Costs; D006801:Humans; D007902:Length of Stay / Q000191:economics / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D010359:Patient Readmission / Q000191:economics / Q000706:statistics & numerical data*; D010414:Pennsylvania / Q000453:epidemiology; D011183:Postoperative Complications / Q000191:economics / Q000453:epidemiology; D012189:Retrospective Studies; D012307:Risk Factors; D055815:Young Adult
keywords: Adults; Outcome research; Readmission; Risk factors; Type 2 diabetes