Hyo Jung Tak1, Andrew M Goldsweig2, Fernando A Wilson3, Andrew W Schram4, Milda R Saunders5, Michael Hawking6, Tanush Gupta7, Cindy Yuan8, Li-Wu Chen9. 1. Department of Health Services Research and Administration, University of Nebraska Medical Center, Omaha, NE, 68198, USA. hyojung.tak@unmc.edu. 2. Division of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, NE, USA. 3. Matheson Center for Health Care Studies, University of Utah, Salt Lake City, UT, USA. 4. Section of Hospital Medicine, University of Chicago, Chicago, IL, USA. 5. Section of General Internal Medicine, University of Chicago, Chicago, IL, USA. 6. Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA. 7. Division of Cardiovascular Medicine, Houston Methodist Hospital, Houston, TX, USA. 8. Department of Radiology, University of California San Francisco, San Francisco, CA, USA. 9. Department of Health Sciences, University of Missouri, Columbia, MO, USA.
Abstract
BACKGROUND: Although early follow-up after discharge from an index admission (IA) has been postulated to reduce 30-day readmission, some researchers have questioned its efficacy, which may depend upon the likelihood of readmission at a given time and the health conditions contributing to readmissions. OBJECTIVE: To investigate the relationship between post-discharge services utilization of different types and at different timepoints and unplanned 30-day readmission, length of stay (LOS), and inpatient costs. DESIGN, SETTING, AND PARTICIPANTS: The study sample included 583,199 all-cause IAs among 2014 Medicare fee-for-service beneficiaries that met IA inclusion criteria. MAIN MEASURES: The outcomes were probability of 30-day readmission, average readmission LOS per IA discharge, and average readmission inpatient cost per IA discharge. The primary independent variables were 7 post-discharge health services (institutional outpatient, primary care physician, specialist, non-physician provider, emergency department (ED), home health care, skilled nursing facility) utilized within 7 days, 14 days, and 30 days of IA discharge. To examine the association with post-discharge services utilization, we employed multivariable logistic regressions for 30-day readmissions and two-part models for LOS and inpatient costs. KEY RESULTS: Among all IA discharges, the probability of unplanned 30-day readmission was 0.1176, the average readmission LOS per discharge was 0.67 days, and the average inpatient cost per discharge was $5648. Institutional outpatient, home health care, and primary care physician visits at all timepoints were associated with decreased readmission and resource utilization. Conversely, 7-day and 14-day specialist visits were positively associated with all three outcomes, while 30-day visits were negatively associated. ED visits were strongly associated with increases in all three outcomes at all timepoints. CONCLUSION: Post-discharge services of different types and at different timepoints have varying impacts on 30-day readmission, LOS, and costs. These impacts should be considered when coordinating post-discharge follow-up, and their drivers should be further explored to reduce readmission throughout the health care system.
BACKGROUND: Although early follow-up after discharge from an index admission (IA) has been postulated to reduce 30-day readmission, some researchers have questioned its efficacy, which may depend upon the likelihood of readmission at a given time and the health conditions contributing to readmissions. OBJECTIVE: To investigate the relationship between post-discharge services utilization of different types and at different timepoints and unplanned 30-day readmission, length of stay (LOS), and inpatient costs. DESIGN, SETTING, AND PARTICIPANTS: The study sample included 583,199 all-cause IAs among 2014 Medicare fee-for-service beneficiaries that met IA inclusion criteria. MAIN MEASURES: The outcomes were probability of 30-day readmission, average readmission LOS per IA discharge, and average readmission inpatient cost per IA discharge. The primary independent variables were 7 post-discharge health services (institutional outpatient, primary care physician, specialist, non-physician provider, emergency department (ED), home health care, skilled nursing facility) utilized within 7 days, 14 days, and 30 days of IA discharge. To examine the association with post-discharge services utilization, we employed multivariable logistic regressions for 30-day readmissions and two-part models for LOS and inpatient costs. KEY RESULTS: Among all IA discharges, the probability of unplanned 30-day readmission was 0.1176, the average readmission LOS per discharge was 0.67 days, and the average inpatient cost per discharge was $5648. Institutional outpatient, home health care, and primary care physician visits at all timepoints were associated with decreased readmission and resource utilization. Conversely, 7-day and 14-day specialist visits were positively associated with all three outcomes, while 30-day visits were negatively associated. ED visits were strongly associated with increases in all three outcomes at all timepoints. CONCLUSION: Post-discharge services of different types and at different timepoints have varying impacts on 30-day readmission, LOS, and costs. These impacts should be considered when coordinating post-discharge follow-up, and their drivers should be further explored to reduce readmission throughout the health care system.
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