Poor reporting and inadequate searches were apparent in systematic reviews of adverse effects

Ref ID 375
First Author S. Golder
Journal JOURNAL OF CLINICAL EPIDEMIOLOGY
Year Of Publishing 2008
URL https://www.jclinepi.com/article/S0895-4356(07)00217-X/fulltext
Keywords • Reproducibility
• General medical
• Harms
• Searching
Problem(s) • Methods not described to enable replication
• Insufficient literature searches
• Reliance on randomised controlled trials for harms / safety data
Article Type Empirical
Article Subtype Cross-sectional survey/Methodological systematic review
First Author Country United Kingdom
Aim To assess the methods used to identify relevant studies for systematic reviews of adverse effects from the Database of Abstracts of Reviews of Effects and the Cochrane Database of Systematic Reviews between 1994 and 2005.
Level of Investigation Descriptive
Summary of Findings Less than 5% of the included systematic reviews of adverse effects reported enough detail for the searches to be reproducible. The majority of reviews did not indicate whether they used any language restrictions. Many of the reported literature searches relied solely on indexing or text-word searches, with little use of synonyms and truncation. Few reviews (14%) attempted to source information from pharmaceutical companies. The majority of reviews did not search more than one or two databases, and few other methods of identifying information were used.
Number of systematic reviews included 277
Number of eligible systematic reviews assessed 320
Treatment impacted No
Treatment impacted description
Interpretation impacted Not Applicable
Interpretation impacted description