Table 1.
Critical appraisal checklist.
Fig 1.
European subregions defined by EuroVoc.
Blue—Northern Europe, green—Western Europe, red—Eastern Europe, yellow—Southern Europe, grey—territories not considered part of Europe. By Samotny Wędrowiec, 2014, via Wikimedia Commons. Used under Creative Commons Attribution-ShareAlike 3.0.
Fig 2.
Flow diagram for the study selection process.
Table 2.
Summary of studies included in the review.
Fig 3.
Forest plot for meta-analysed studies on adolescents’ PSHC, grouped by decade.
Table 3.
Meta-analytic findings for studies on adolescents’ PSHC (Random effects model).
Fig 4.
Forest plot for meta-analysed studies on adolescents’ PSHC, grouped by multinational subregion.
Table 4.
Meta-analytic findings for studies on adolescents’ PSHC, by multi-national sub-region (Random effects model).