Agenda:
In a systematic review and meta-analysis heterogeneity is defined as any variation among the studies and is categorized as clinical, methodological, and statistical. There are multiple methods suggested in the literature to identify and estimate statistical heterogeneity. However, it is often difficult to deal with its presence, while misconceptions may lead to wrong interpretation of review findings. In this web clinic, Afroditi Kanellopoulou and Sofia Tsokani, Statistics Editors from the Methods Support Unit, will explain the concept of heterogeneity, discuss how to deal with its presence and to avoid common mistakes related to it. There will be plenty of time for questions and discussion.