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Potentially missing data are considerably more frequent than definitely missing data: a methodological survey of 638 randomized controlled trials.
Kahale LA, Diab B, Khamis AM, Chang Y, Lopes LC, Agarwal A, Li L, Mustafa RA, Koujanian S, Waziry R, Busse JW, Dakik A, Guyatt G, Akl EA. Kahale LA, et al. Among authors: koujanian s. J Clin Epidemiol. 2019 Feb;106:18-31. doi: 10.1016/j.jclinepi.2018.10.001. Epub 2018 Oct 6. J Clin Epidemiol. 2019. PMID: 30300676 Review.
Meta-Analyses Proved Inconsistent in How Missing Data Were Handled Across Their Included Primary Trials: A Methodological Survey.
Kahale LA, Khamis AM, Diab B, Chang Y, Lopes LC, Agarwal A, Li L, Mustafa RA, Koujanian S, Waziry R, Busse JW, Dakik A, Hooft L, Guyatt GH, Scholten RJPM, Akl EA. Kahale LA, et al. Among authors: koujanian s. Clin Epidemiol. 2020 May 27;12:527-535. doi: 10.2147/CLEP.S242080. eCollection 2020. Clin Epidemiol. 2020. PMID: 32547244 Free PMC article.