Systematic reviewers commonly contact study authors but do so with limited rigor

Ref ID 335
First Author R. J. Mullan
Journal JOURNAL OF CLINICAL EPIDEMIOLOGY
Year Of Publishing 2009
URL https://www.jclinepi.com/article/S0895-4356(08)00211-4/fulltext
Keywords Author
Missing data
General medical
Problem(s) Failure to address missing outcome data in analyses
Number of systematic reviews included 147
Summary of Findings From 111 survey responses from 146 systematic reviews. 50% of the systematic reviews published in top journals and 85% of the Cochrane reviews reported contacting authors of eligible studies. Requests were made most commonly for missing information. Both Cochrane and journal systematic reviews infrequently and incompletely report the results of author contact.
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? No