• Int. J. Radiat. Oncol. Biol. Phys. · Oct 2006

    Comparative Study

    Using decision analysis to determine the cost-effectiveness of intensity-modulated radiation therapy in the treatment of intermediate risk prostate cancer.

    • Andre Konski, Deborah Watkins-Bruner, Steven Feigenberg, Alexandra Hanlon, Sachin Kulkarni, J Robert Beck, Eric M Horwitz, and Alan Pollack.
    • Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA. andre.konski@fccc.edu
    • Int. J. Radiat. Oncol. Biol. Phys. 2006 Oct 1; 66 (2): 408-15.

    BackgroundThe specific aim of this study is to evaluate the cost-effectiveness of intensity-modulated radiation therapy (IMRT) compared with three-dimensional conformal radiation therapy (3D-CRT) in the treatment of a 70-year-old with intermediate-risk prostate cancer.MethodsA Markov model was designed with the following states; posttreatment, hormone therapy, chemotherapy, and death. Transition probabilities from one state to another were calculated from rates derived from the literature for IMRT and 3D-CRT. Utility values for each health state were obtained from preliminary studies of preferences conducted at Fox Chase Cancer Center. The analysis took a payer's perspective. Expected mean costs, cost-effectiveness scatterplots, and cost acceptability curves were calculated with commercially available software.ResultsThe expected mean cost of patients undergoing IMRT was $47,931 with a survival of 6.27 quality-adjusted life years (QALYs). The expected mean cost of patients having 3D-CRT was $21,865 with a survival of 5.62 QALYs. The incremental cost-effectiveness comparing IMRT with CRT was $40,101/QALYs. Cost-effectiveness acceptability curve analysis revealed a 55.1% probability of IMRT being cost-effective at a $50,000/QALY willingness to pay.ConclusionIntensity-modulated radiation therapy was found to be cost-effective, however, at the upper limits of acceptability. The results, however, are dependent on the assumptions of improved biochemical disease-free survival with fewer patients undergoing subsequent salvage therapy and improved quality of life after the treatment. In the absence of prospective randomized trials, decision analysis can help inform physicians and health policy experts on the cost-effectiveness of emerging technologies.

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