Zombie reviews taking over the PROSPERO systematic review registry. It’s time to fight back!

Ref ID 732
First Author R. Andrade
Journal BRITISH JOURNAL OF SPORTS MEDICINE
Year Of Publishing 2019
URL https://pubmed.ncbi.nlm.nih.gov/29021246/
Keywords Protocols
Publication bias
General medical
Currency
Problem(s) Unpublished or "zombie" reviews (the file-drawer effect)
Number of systematic reviews included 18959
Summary of Findings Of the 18959 PROSPERO registrations included by the article authors in 2016, only 7% of systematic reviews registered in PROSPERO between 2011 and 2015 had their status updated to 'published'. The authors highlight that abandoned systematic reviews or those that have not been completed remain in PROSPERO indefinitely—as zombie titles—clogging up the registry
Did the article find that the problem(s) led to qualitative changes in interpretation of the results? Not Applicable
Are the methods of the article described in enough detail to replicate the study? Yes