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Cumulative sum control charts for assessing performance in arterial surgery.
C Barry Beiles1, Anthony P Morton
1Melbourne Vascular Surgical Association, Melbourne, Victoria, Australia. barryb2@optusnet.com.au
ANZ Journal of Surgery
|March 5, 2004
Summary
Cumulative sum control charts effectively monitor arterial surgery performance. This audit tool helps identify variations and manage outcomes, ensuring high standards in vascular surgery.
Area of Science:
- Vascular Surgery
- Quality Improvement
- Statistical Process Control
Background:
- The Melbourne Vascular Surgical Association monitors outcomes for aortic aneurysm surgery, infrainguinal bypass, and carotid endarterectomy.
- Quality improvement requires system analysis, data collection, and feedback mechanisms for optimizing surgical performance.
- Cumulative sum (CUSUM) statistical control charts offer a method for analyzing outcome data and detecting changes in average rates.
Purpose of the Study:
- To evaluate the effectiveness of cumulative sum control charts in monitoring arterial surgery performance.
- To establish a pathway for managing identified variations in surgical outcomes.
Main Methods:
- Retrospective (1999-2001) and prospective (2002) data analysis using cumulative sum control methods.
- Development of a standardized pathway to address signals from control charts.
Main Results:
- The study demonstrated that cumulative sum control charts are a simple and effective tool for identifying performance variations in arterial surgery.
- A developed pathway was successfully utilized in one case to achieve a safe and satisfactory surgical outcome.
Conclusions:
- Cumulative sum control charts are valuable for identifying variations in arterial surgery performance standards.
- Establishing a pathway to manage suboptimal performance is a critical component of surgical audit activities.