• Radiology · Feb 2010

    Multicenter Study Comparative Study

    Minor head injury: CT-based strategies for management--a cost-effectiveness analysis.

    • Marion Smits, Diederik W J Dippel, Paul J Nederkoorn, Helena M Dekker, Pieter E Vos, Digna R Kool, Daphne A van Rijssel, Paul A M Hofman, Albert Twijnstra, Hervé L J Tanghe, and M G Myriam Hunink.
    • Department of Radiology, Erasmus MC-University Medical Center Rotterdam, PO Box 2040, 3000 CA Rotterdam, Rotterdam, the Netherlands.
    • Radiology. 2010 Feb 1;254(2):532-40.

    PurposeTo compare the cost-effectiveness of using selective computed tomographic (CT) strategies with that of performing CT in all patients with minor head injury (MHI).Materials And MethodsThe internal review board approved the study; written informed consent was obtained from all interviewed patients. Five strategies were evaluated, with CT performed in all patients with MHI; selectively according to the New Orleans criteria (NOC), Canadian CT head rule (CCHR), or CT in head injury patients (CHIP) rule; or in no patients. A decision tree was used to analyze short-term costs and effectiveness, and a Markov model was used to analyze long-term costs and effectiveness. n-Way and probabilistic sensitivity analyses and value-of-information (VOI) analysis were performed. Data from the multicenter CHIP Study involving 3181 patients with MHI were used. Outcome measures were first-year and lifetime costs, quality-adjusted life-years, and incremental cost-effectiveness ratios.ResultsStudy results showed that performing CT selectively according to the CCHR or the CHIP rule could lead to substantial U.S. cost savings ($120 million and $71 million, respectively), and the CCHR was the most cost-effective at reference-case analysis. When the prediction rule had lower than 97% sensitivity for the identification of patients who required neurosurgery, performing CT in all patients was cost-effective. The CHIP rule was most likely to be cost-effective. At VOI analysis, the expected value of perfect information was $7 billion, mainly because of uncertainty about long-term functional outcomes.ConclusionSelecting patients with MHI for CT renders cost savings and may be cost-effective, provided the sensitivity for the identification of patients who require neurosurgery is extremely high. Uncertainty regarding long-term functional outcomes after MHI justifies the routine use of CT in all patients with these injuries.(c) RSNA, 2010

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