“…The integration of subgroup analysis data in decisions on rating the evidence based on inconsistency was not common in the investigated reviews in either of the groups. This could be partially explained by the fact that, in general, an intention of subgroup analysis for the purposes of explaining the sources of heterogeneity was expressed by most reviews; in most cases, it was not conducted [32,35,36,38,47,50,51,53,57,65,66], or conducted for a very limited number of variables [39,41,45,49,55,60,63,64], mainly due to an insufficient number of studies.…”