Antidepressants v placebo for chronic headache*
| Weighted event rates† | ||||
|---|---|---|---|---|
| Outcome at 4 to 27 weeks | Antidepressants | Placebo | RBI (95% CI) | NNT (CI) |
| *Meta-analyses were done using a random effects model. Abbreviations defined in glossary; RBI, NNT, and CI calculated from data in article. | ||||
| †Information provided by author. | ||||
| Overall improvement | 65% | 33% | 100% (60 to 140) | 4 (3 to 5) |
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Online ISSN 1473-6810
Copyright © 2012 the BMJ Publishing Group Ltd. All rights reserved.
