Cost Effectiveness of Trauma Quality Assurance Audit Filters

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Abstract
The American College of Surgeons Committee on Trauma (ACSCOT) has published recommended minimal audit filters for trauma quality assurance. In this study ten filters were assessed through variable sample sizes over a 1-year period for cost and efficiency. Each filtered case was screened by trauma nurse coordinators. The trauma director reviewed possible deviations from standard and presented cases at peer review conferences for consensus on problem identification. While several filters had reasonable yield, most filters had minimal or no yield. Ten de novo problems were identified at a cost of $1,100 per de novo problem. Six filters were modified based on common reasons for overfiltration, resulting in a substantial reduction in filtration rate without losing problem identification. We conclude that ACSCOT audit filters 1 (unexpected deaths), 4 (ICU LOS > twice the average), 5 (trauma surgeon response), and 9 (major surgery < 24 hours) have a reasonable yield. Filters 2, 3, 7, 8, 11, and 12 have limited value to an established suburban trauma center and are not cost effective. Modifications of these filters can reduce cost without obvious impact on effectiveness. Specific audit filters recommended for future study are presented.

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