Figure 2.
The flow diagram presents four stages labelled Identification, Preselection, Suitability, and Included. Under Identification, a box reads Found in international scientific platforms and databases n equals 114, listing Web of Science n equals 78, ScienceDirect n equals 26, and Scopus n equals 10. An adjacent box reads Additional Source Google Scholar, including grey literature n equals 8. A central box reads Remaining after the removal of duplicates n equals 114. Under Preselection, a box reads Included in pre-selection n equals 51, with a side box Excluded n equals 24. Under Suitability, a box reads Full text evaluated for suitability n equals 27, with a side box Full text excluded with explanation n equals 17. The final box reads Studies included n equals 10. Arrows connect each stage vertically and link exclusions horizontally.Flowchart for the choice of studies
Source: Authors’ own work, adapted from von Elm et al. (2019); Peters et al. (2020)Â