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  • Title: The cost effectiveness of rofecoxib and celecoxib in patients with osteoarthritis or rheumatoid arthritis.
    Author: Maetzel A, Krahn M, Naglie G.
    Journal: Arthritis Rheum; 2003 Jun 15; 49(3):283-92. PubMed ID: 12794781.
    Abstract:
    OBJECTIVE: To evaluate the cost effectiveness of the cyclooxygenase 2 (COX-2) selective nonsteroidal antiinflammatory drug (NSAID) rofecoxib compared with naproxen and the COX-2 NSAID celecoxib compared with ibuprofen and diclofenac. METHODS: Cost-effectiveness analysis based on a 5-year Markov model. Probability estimates were derived from detailed data of 2 randomized trials and a systematic search of the medical literature. Utility estimates were obtained from 60 randomly selected members of the general public. Cost estimates were obtained from Canadian provincial databases. Incremental cost-effectiveness ratios were calculated for patients at average risk of upper gastrointestinal (UGI) events and for high-risk patients with a prior history of a UGI event. Subjects were patients with osteoarthritis or rheumatoid arthritis (RA) where a decision has been made to treat with NSAIDs but who do not require low-dose aspirin. Main outcome measures were proportion of patients with clinical or complicated UGI events, quality-adjusted life expectancy, and life expectancy. RESULTS: Evaluation of rofecoxib versus naproxen in patients with RA at average risk resulted in costs per quality-adjusted life year (QALY) gained of $Can271,188. Celecoxib was dominated by diclofenac in average-risk patients. Both rofecoxib and celecoxib are cost-effective in high-risk patients. Analyses by age groups and assuming a threshold of Can$50,000 per QALY gained, suggest that rofecoxib or celecoxib would be cost-effective in patients aged over 76 and 81, respectively, without additional risk factors. CONCLUSION: Both rofecoxib and celecoxib are economically attractive in high risk and elderly patients. They are not economically attractive in patients at average risk. Coprescription of proton-pump inhibitors with COX-2 NSAIDs is not economically attractive for patients at high risk.
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