Table 2.

The Joanna Briggs Institute Critical Appraisal Checklist.

Study	Were the Criteria for Inclusion in the Sample Clearly Defined?	Were the Study Subjects and the Setting Described in Detail?	Was the Exposure Measured in a Valid and Reliable Way?	Were Objective, Standard Criteria Used for Measurement of the Condition?	Were Confounding Factors Identified?	Were Strategies to Deal with Confounding Factors Stated?	Were the Outcomes Measured in a Valid and Reliable Way?	Was Appropriate Statistical Analysis Used?	Risk of Bias
Chen MF [46]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Yilmaz MI [27]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Ghayour-Mobarhan M [47]	No	No	Yes	Yes	No	No	Yes	No	High
Molčányiová A [48]	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Low
Ruiz MC [49]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Save V [50]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Su Y [51]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Janic M [52]	No	No	Yes	Yes	No	No	Yes	No	High
Sena-Evangelista KCM [53]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Yildiz A [54]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Fassett RG [55]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Hernandez-Mijares A [56]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Abdel Magid AM [57]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Hadzi-Petrushev N [58]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low
Mayyas F [59]	Yes	Yes	Yes	Yes	No	No	Yes	No	Low