Journal
ALIMENTARY PHARMACOLOGY & THERAPEUTICS
Volume 20, Issue 2, Pages 143-149Publisher
WILEY
DOI: 10.1111/j.1365-2036.2004.02018.x
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Background: Details of the efficacy of the drugs used in ulcerative colitis are not readily available. Methods: We have reviewed all placebo-controlled trials of the commonly used drugs for both induction and maintenance of remission to determine the efficacy and to calculate the numbers needed to treat (NNTs) to achieve a specified benefit for each drug. Results: The drug response rates and the NNTs (with 95% CI) are tabulated for each drug. Conclusion: Corticosteroids give a remission rate of 68% in mild or moderate disease and an NNT for remission of 2 (95% CI 1.4-5) in mild disease. Intravenous hydrocortisone gives a remission rate of 60-73%. Aminosalicylates are relatively ineffective in inducing remission with an NNT of 10 (95% CI 7-21) improving to 8 (95% CI 5-20) if the dose greater than or equal to3 g daily. They are better at maintenance (NNT = 6; 95% CI 4-8). Intravenous ciclosporin is very effective in achieving remission in severe colitis with an NNT of 1.2 (95% CI 1-2.5). Although there is fairly good evidence that azathioprine is effective in maintaining remission and is used widely, there are no suitable placebo-controlled trials to calculate the NNT.
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