Table 5 An overview of review types as indicated in the title of papers included in this study

1. Systematic reviews of quantitative research (systematic literature review; systematic review; systematic review of quantitative research; systematic review and narrative synthesis): n = 82.

2. Systematic reviews of qualitative and quantitative studies (integrative narrative review, mixed method review, systematic review of qualitative and quantitative evidence, mixed method meta-synthesis): n = 46.

3. Systematic review +meta-analysis (Cochrane review summary): n = 29.

4. Systematic review of qualitative studies (qualitative meta-synthesis; systematic review and meta-synthesis; systematic review of qualitative studies; meta-ethnography; critical interpretative synthesis): n = 27.

5. Scoping review (including narrative scoping review): n = 15.

6. Literature review (critical literature review; review; literature review, narrative review: n = 13.

7. Realist review: n = 3.

8. Rapid evidence/ rapid review of evidence: n = 2.

9. Review of reviews (overview review; umbrella review): n = 2.

10. Conceptual review: n = 1.

11. Theoretical review: n = 1.

12. Methodological review: n = 1.