Browse by Audience
Skip to content
Papers of the Week
Reviews may overestimate the effectiveness of medicines for back pain: systematic review and meta-analysis.
Abstract
Systematic-reviews of analgesics for low back pain generally include published data only. Obtaining data from unpublished trials is potentially important because they may impact effect sizes in meta-analyses. We determined whether including unpublished data from trial registries changes the effect sizes in meta-analyses of analgesics for low back pain.