PRISMA checklist item | Atlantis 2014 [23] | Huang 2013 [24] | Joshi 2014 [25] | Smith 2016 [26] | Watson 2013 [27] |
---|---|---|---|---|---|
Title | |||||
 1. Title | Yes | Yes | Yes | Yes | Yes |
Abstract | |||||
 2. Structured summary | Yes | Yes | Yes | Yes | Yes |
Introduction | |||||
 3. Rationale | Yes | Yes | Yes | Yes | Yes |
 4. Objectives | Yes | Yes | Yes | Yes | Yes |
Methods | |||||
 5. Protocol and registration | No | Yes | Yes | Yes | Yes |
 6. Eligibility criteria | Yes | Yes | Yes | Yes | Yes |
 7. Information sources | Yes | Yes | Yes | Yes | Yes |
 8. Search | Yes | Yes | No | Yes | Unclear |
 9. Study selection | Yes | Yes | No | Yes | Yes |
 10. Data collection process | Partly | Partly | No | Yes | Yes |
 11. Data items | No | Yes | No | Yes | Yes |
 12. Risk of bias in individual studies | Partly | Yes | No | Yes | Yes |
 13. Summary measures | Yes | Yes | N/A | Yes | Yes |
 14. Synthesis of results | Yes | Yes | No | Yes | Yes |
 15. Risk of bias across studies | Yes | Yes | No | Yes | Unclear |
 16. Additional analyses | Partly | Yes | No | Yes | Yes |
Results | |||||
 17. Study selection | Yes | Yes | Not adequate | Yes | Yes |
 18. Study characteristics | Yes | Yes | Yes | Yes | Yes |
 19. Risk of bias within studies | Partly | Yes | No | Yes | Unclear |
 20. Results of individual studies | Yes | Yes | No | Yes | Yes |
 21. Synthesis of results | Yes | Yes | N/A | Yes | Partly |
 22. Risk of bias across studies | No | N/A | No | Yes | No |
 23. Additional analysis | Yes | N/A | N/A | N/A | No |
Discussion | |||||
 24. Summary of evidence | Yes | Yes | Yes | Yes | Partly |
 25. Limitations | Partly | Yes | Partly | Yes | Yes |
 26. Conclusions | Yes | Partly | Partly | Yes | Yes |
Funding | |||||
 27. Funding | Yes | No | Yes | Yes | Partly |
Number of items included (yes) | 19/27 | 22/27 | 10/27 | 26/27 | 19/27 |