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Trials and tribulations of vascular surgical benchmarking
D C Berridge1, D J Scott, J D Beard
1Department of Vascular Surgery, St James's University Hospital, Leeds, UK.
Insights
Hospital efficiency benchmarking revealed significant variations in length of stay (LOS) for vascular surgery, but these differences may not reflect true clinical performance.
Area of Science:
- Healthcare Management
- Surgical Outcomes Analysis
- Hospital Performance Metrics
Background:
- Benchmarking is an emerging method for assessing hospital efficiency.
- Healthcare Resource Groups (HRGs) classify operations based on case volume, length of stay (LOS), and patient demographics.
- Understanding variations in surgical outcomes is crucial for quality improvement.
Purpose of the Study:
- To compare the efficiency of three hospitals using benchmarking.
- To analyze variations in length of stay (LOS) and patient case mix for vascular/venous surgery.
- To identify factors contributing to observed performance differences.
Main Methods:
- Utilized a National Comparative Database for analysis.
- Focused on major HRGs within vascular/venous surgery.
- Compared patient volume, LOS, and case complexity across three hospitals.
Main Results:
- Hospitals showed similar LOS and patient numbers for high-volume varicose vein surgery.
- Routine vascular operations had double the LOS in Hospital A compared to Hospital B (16.3 vs. 7.4 days).
- Major amputation LOS in Hospitals A and C was nearly double that in Hospital B (32.4, 33.6 vs. 18.3 days).
- Hospital A managed significantly more 'other - peripheral vascular disease' cases than Hospitals B and C.
Conclusions:
- Significant inter-hospital variations were observed in vascular surgery metrics over a 9-month period.
- Explanations for variations include coding practices, local resources (e.g., rehabilitation beds), and patient age profiles.
- Current benchmarking methods may highlight variations not indicative of actual clinical performance differences.
Background:
Benchmarking is a new tool to assess the efficiency of different hospitals. Classification of operations using healthcare resource groups (HRGs) is related to parameters including number of cases, length of stay (LOS) and age profile.
Methods:
A National Comparative Database was used to compare three hospitals. Analysis was confined to the major HRGs involved with vascular/venous surgery.
Results:
For high-volume low-complexity varicose vein surgery, all three hospitals had similar numbers of patients and LOS. In contrast, the LOS for routine vascular operations in hospital A was double that in hospital B (16.3 versus 7.4 days). Hospital A had three times as many patients classified as 'other - peripheral vascular disease' as hospital C and six times as many as hospital B (329, 49 and 111 for hospitals A, B and C respectively). LOS following major amputation in hospitals A and C was nearly double that in hospital B (32.4, 18.3 and 33.6 days for hospitals A, B and C respectively).
Conclusion:
There were a number of significant variations between the three hospitals during the 9-month interval. Explanations included the methods of coding, local facilities including availability of rehabilitation beds and difference in the patients' age profiles. Benchmarking in its present format reveals a number of variations which may not necessarily reflect real differences in clinical performance.