• J Rheumatol · Aug 2000

    Randomized Controlled Trial Multicenter Study Comparative Study Clinical Trial

    Upper gastrointestinal tolerability of celecoxib, a COX-2 specific inhibitor, compared to naproxen and placebo.

    • W G Bensen, S Z Zhao, T A Burke, R A Zabinski, R W Makuch, C J Maurath, N M Agrawal, and G S Geis.
    • Global Health Outcomes, Statistics, Clinical Research, Pharmacia, Skokie, IL 60077, USA.
    • J Rheumatol. 2000 Aug 1; 27 (8): 1876-83.

    ObjectiveTo determine the upper gastrointestinal (GI) tolerability of celecoxib, naproxen, and placebo in patients with rheumatoid arthritis (RA) and osteoarthritis (OA).MethodsAn analysis of 5, 12-week, randomized, double blind, parallel group, placebo controlled clinical trials was conducted. In these trials, patients were randomized to: naproxen 500 mg bid (n = 1,099), placebo (n = 1,136), celecoxib 50 mg bid (n = 690) (subtherapeutic dose), celecoxib 100 mg (n = 1,131) or 200 mg bid (n = 1,125) (therapeutic dose), or celecoxib 400 mg bid (n = 434) (supratherapeutic dosage). The incidence and time until moderate to severe abdominal pain, dyspepsia, nausea, and any of the aforementioned 3 upper GI symptoms (composite endpoint) were determined using time-to-event analysis.ResultsThe cumulative incidences of moderate to severe abdominal pain, dyspepsia, or nausea (composite endpoint) were: naproxen 500 mg (12.0%; 95% CI 9.9%-14.0%), celecoxib 50 mg bid (7.1%; 95% CI 5.0%-9.2%), celecoxib 100 mg bid (7.8%; 95% CI 6.0%-9.5%), celecoxib 200 mg bid (8.1%; 95% CI 6.4%-9.9%), celecoxib 400 mg bid (6.0%; 95% CI 3.6%-8.4%), and placebo (8.5%; 95% CI 6.5%-10.8%). After controlling for independent predictors of the composite endpoint, relative risks (RR) for the various treatments relative to naproxen 500 mg bid were: celecoxib 50 mg (RR 0.54; 95% CI 0.37-0.77; p < 0.001), celecoxib 100 mg (RR 0.60; 95% CI 0.45-0.80; p < 0.001), celecoxib 200 mg bid (RR 0.63; 95% CI 0.47-0.83; p = 0.001), celecoxib 400 mg bid (RR 0.56; 95% CI 0.35-0.89; p = 0.015), and placebo (RR 0.63; 95% CI 0.47-0.85; p = 0.002). After controlling for independent predictors of the composite endpoint, celecoxib treatment group patients did not differ from placebo patients when reporting the composite endpoint, with p values ranging from 0.40 to 0.96.ConclusionThe upper GI tolerability of celecoxib is superior to naproxen. A dose-response relationship between celecoxib and upper GI symptoms was not apparent.

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