Objective: To evaluate the cost-effectiveness of samarium [153Sm-EDTMP] (Quadramet) compared to conventional therapy in the treatment of pain in patients with prostate cancer and bone metastases.
Method: A decision tree model for the treatment of bone pain due to metastases was adapted to the Spanish context. The model represents the standard treatment patterns in Spain for the study population. The time-course of the model is 4 months and it computes an estimate for the cost of pain control per patient. The effectiveness data for the model derive from a randomised trial. The current treatment patterns have been established according to the consensus opinions of a group of medical experts.
Results: The cost of pain control per patient is euro 12,515.39 for conventional therapy and euro 5,595.52 for samarium-153 (Quadramet) therapy. The incremental cost-effectiveness analysis shows that samarium-153 (Quadramet) is a dominant therapy. It presents lower costs and higher efficacy than the conventional strategy. The sensitivity analyses showed these results to be robust.
Conclusion: Samarium-153 (Quadramet) is cost-effective in treating pain in patients with prostate cancer and bone metastases.
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