Robert H Hollis1, Laura A Graham1, Joshua S Richman1, Melanie S Morris1, Hillary J Mull2, Tyler S Wahl1, Edith Burns3, Laurel A Copeland4, Gordon L Telford5, Amy K Rosen2, Kamal F Itani6, Jeffrey Whittle3, Todd H Wagner7, Mary T Hawn8. 1. Birmingham and Tuscaloosa Health Services Research and Development Unit, Birmingham VA Medical Center, Birmingham, AL; Department of Surgery, University of Alabama at Birmingham, Birmingham, AL. 2. Veterans Affairs Center for Healthcare Organization and Implementation Research, Veterans Affairs Boston Healthcare System, Boston, MA; Department of Surgery, Boston University School of Medicine, Boston, MA. 3. Milwaukee Veterans Affairs Medical Center, Milwaukee, WI. 4. Veterans Affairs Central Western Massachusetts Healthcare System, Leeds, MA; Baylor Scott & White Health, Center for Applied Health Research, Temple, TX; Texas A&M Health Science Center, College of Medicine, Temple, TX. 5. Milwaukee Veterans Affairs Medical Center, Milwaukee, WI; Department of Surgery, Medical College of Wisconsin, Milwaukee, WI. 6. Veterans Affairs Center for Healthcare Organization and Implementation Research, Veterans Affairs Boston Healthcare System, Boston, MA; Department of Surgery, Boston University School of Medicine, Boston, MA; Harvard University School of Medicine, Boston, MA. 7. Veterans Affairs, Palo Alto Veterans Affairs Medical Center, Palo Alto, CA; Department of Surgery, Stanford University School of Medicine, Palo Alto, CA. 8. Veterans Affairs, Palo Alto Veterans Affairs Medical Center, Palo Alto, CA; Department of Surgery, Stanford University School of Medicine, Palo Alto, CA. Electronic address: mhawn@stanford.edu.
Abstract
BACKGROUND: Hospital readmission rates after surgery can represent an overall hospital effect or a combination of specialty and patient effects. We hypothesized that hospital readmission rates for procedures within specialties were more strongly correlated than rates across specialties within the same hospital. STUDY DESIGN: For general, orthopaedic, and vascular specialties at Veterans Affairs hospitals during 2008 to 2014, 30-day risk-adjusted readmission rates were estimated for 6 high-volume procedures and each specialty. Relationships were assessed using the Pearson correlation coefficient. RESULTS: At 84 hospitals, 64,724 orthopaedic, 24,963 general, and 10,399 vascular inpatient procedures were performed; mean readmission rates were 6.3%, 13.6%, and 16.4%, respectively. There was no correlation between specialty-specific adjusted hospital readmission rates: general and orthopaedic (r = 0.21; p = 0.06), general and vascular (r = 0.15; p = 0.19), and vascular and orthopaedic surgery (r = 0.07; p = 0.55). Within specialties, we found modest correlations between knee and hip arthroplasty readmission rates (r = 0.39; p < 0.01) and colectomy and ventral hernia repair (r = 0.24; p = 0.03), but not between lower-extremity bypass and endovascular aortic repair (r = 0.13; p = 0.26). Overall, controlling for patient-level factors, 1.9% of the variation in readmissions was attributable to specialty-level factors; only 0.6% was attributable to hospital-level factors. CONCLUSIONS: Hospital readmission rates for orthopaedic, vascular, and general surgery were not correlated between specialties; within each of the 3 specialties, modest correlations were found between 2 procedures within 2 of these specialties. These findings suggest that hospital surgical readmission rates are primarily explained by patient- and procedure-specific factors and less by broader specialty and/or hospital effects. Published by Elsevier Inc.
BACKGROUND: Hospital readmission rates after surgery can represent an overall hospital effect or a combination of specialty and patient effects. We hypothesized that hospital readmission rates for procedures within specialties were more strongly correlated than rates across specialties within the same hospital. STUDY DESIGN: For general, orthopaedic, and vascular specialties at Veterans Affairs hospitals during 2008 to 2014, 30-day risk-adjusted readmission rates were estimated for 6 high-volume procedures and each specialty. Relationships were assessed using the Pearson correlation coefficient. RESULTS: At 84 hospitals, 64,724 orthopaedic, 24,963 general, and 10,399 vascular inpatient procedures were performed; mean readmission rates were 6.3%, 13.6%, and 16.4%, respectively. There was no correlation between specialty-specific adjusted hospital readmission rates: general and orthopaedic (r = 0.21; p = 0.06), general and vascular (r = 0.15; p = 0.19), and vascular and orthopaedic surgery (r = 0.07; p = 0.55). Within specialties, we found modest correlations between knee and hip arthroplasty readmission rates (r = 0.39; p < 0.01) and colectomy and ventral hernia repair (r = 0.24; p = 0.03), but not between lower-extremity bypass and endovascular aortic repair (r = 0.13; p = 0.26). Overall, controlling for patient-level factors, 1.9% of the variation in readmissions was attributable to specialty-level factors; only 0.6% was attributable to hospital-level factors. CONCLUSIONS: Hospital readmission rates for orthopaedic, vascular, and general surgery were not correlated between specialties; within each of the 3 specialties, modest correlations were found between 2 procedures within 2 of these specialties. These findings suggest that hospital surgical readmission rates are primarily explained by patient- and procedure-specific factors and less by broader specialty and/or hospital effects. Published by Elsevier Inc.
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