Table 3.

Qualitative analysis of the included studies

Randomization	Allocation concealment	Blinding of participant's personnel	Blinding of outcome assessors	Completeness of follow-up	Selective reporting (statistical reporting)	Other bias	References
NA	NA	–	+	+	NA	+	Alhussaini [38]
NA	NA	–	NA	+	+	+	Torkzaban et al. [39]
NA	NA	–	NA	+	+	+	Öncü and Alaaddinoglu [40]
+	NA	–	NA	NA	+	+	Diana et al. [41]
+	NA	NA	NA	+	+	+	Öncü and Alaaddinoglu [42]
+	+	NA	NA	+	+	+	Tabrizi et al. [3]
+	+	–	+	+	+	+	Darestani et al. [43]