There were large discrepancies in risk of bias tool judgments when a randomized controlled trial appeared in more than one systematic review

Ref ID	379
First Author	V. M. Jordan
Journal	JOURNAL OF CLINICAL EPIDEMIOLOGY
Year Of Publishing	2017
URL	https://www.jclinepi.com/article/S0895-4356(16)30414-0/fulltext
Keywords	Cochrane Risk of bias Gynaecology
Problem(s)	Flawed risk of bias undertaken
Number of systematic reviews included	34
Summary of Findings	From 34 Cochrane reviews including 46 duplicated trials, there were 156 bias judgments that were completed by at least two separate groups of authors and appeared in systematic reviews in the Cochrane Library. In 45% of cases, these risk of bias judgments differed. For random sequence generation there was 29% disagreement; For allocation concealment there was 41% disagreement; for blinding there was 65% disagreement; for incomplete outcome reporting there was 30% disagreement; and for selective reporting there was 57% disagreement.
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