Clinical trial registry searches are under-utilized in systematic reviews from critical care journals: A bibliometric analysis – ScienceDirect

“Highlights

 

• Performing clinical trial registry searches for grey literature can decrease publication bias imputed into systematic reviews.
• 88.7% of critical care systematic reviews did not conduct clinical trial registry searches.
• 56% of systematic reviews that did not perform a trial registry search had at least 1 potentially relevant trial that was not included in their analysis….”