Association of Hospital System Affiliation With Spending and Postoperative Outcomes: A Longitudinal Study of Hospital Mergers And Acquisitions From 2010 To 2018
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View abstract on PubMed
Summary
This summary is machine-generated.Hospital system affiliation led to lower surgical spending, primarily due to reduced post-acute care costs. However, joining a system did not significantly impact serious complications, mortality, or readmission rates.
Area Of Science
- Health Services Research
- Health Economics
- Surgical Outcomes
Background
- Over 70% of US hospitals are integrated into larger systems.
- Hospital consolidation aims for efficiency and quality but yields conflicting evidence on cost reduction and outcome improvement.
- The study questions if systems leverage collective volume to standardize care and enhance efficiency.
Purpose Of The Study
- To evaluate the association between hospital system affiliation and changes in surgical episode spending.
- To assess the impact of system affiliation on postoperative outcomes.
- To analyze spending components, including index hospitalization and post-acute care.
Main Methods
- Utilized American Hospital Association Annual Survey and Medicare claims data (2010-2018).
- Analyzed fee-for-service Medicare patients undergoing major elective surgeries (CABG, colon, lung, hip, knee).
- Employed a difference-in-differences framework to compare spending and outcomes before and after system affiliation.
Main Results
- System affiliation correlated with a decrease in 30-day episode spending ($303-$429 reduction within 1-5 years).
- Post-acute care spending significantly decreased by $268 within 1 year post-affiliation.
- No significant changes observed in serious complications, 30-day mortality, or readmission rates.
Conclusions
- Hospital system affiliation is linked to modest reductions in 30-day surgical episode spending.
- Decreased post-acute care spending drives the overall cost reduction.
- System affiliation did not demonstrate a significant impact on key postoperative outcomes.
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