There are currently no clear guidelines on how to proceed when a retracted article is selected in the systematic review process. The Cochrane handbook provides information only on how to identify retracted articles within the scientific literature, instead of clear guidance and criteria for inclusion in the systematic review or not [1]. Other guidelines for conducting systematic reviews do not address this topic [2,3]. Common sense would indicate the exclusion from a systematic review of a study that was retracted because of faked or unreliable data [4].
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Faggion, C. M., Jr. “More detailed guidance on the inclusion/exclusion of retracted articles in systematic reviews is needed.” Journal of Clinical Epidemiology. https://doi.org/10.1016/j.jclinepi.2019.07.006
Publisher: https://www.jclinepi.com/article/S0895-4356(19)30573-6/abstract