Table 3.

Risk of bias assessment criteria

1. Is the aim well defined?

2. Are the characteristics of the study population clearly specified?

3. Are the inclusion or exclusion criteria of participants specified?

4. Is the methodology presented and appropriate?

5. Was intra-rater reliability assessed?

6. Was inter-rater reliability assessed?

7. Was the statistical analysis applied adequate and well explained?

8. Is there an explicit and error-free results presentation?

9. Does it answer the study aim?

10. Are the conclusions based on the study results?