Table 2.

Descriptive table of the biases of the included randomized clinical trials.

Study	Question focus	Appropriate randomization	Allocation blinding	Double-blind	Losses (<20%)	Prognostics or demographic characteristics	Outcomes	Intention to treat analysis	Sample calculation	Adequate follow-up
Jiménez-Osorio et al. (28)	Yes	Yes	Yes	Yes	?	Yes	Yes	No	NR	No
Rahimi et al. (29)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Panahi et al. (20)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	NR	Yes
Panahi et al. (21)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	NR	Yes
Panahi et al. (30)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Adab et al. (31)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Adibian et al. (32)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Asadi S et al. (33)	Yes	Yes	Yes	Yes	Yes	No	Yes	No	Yes	No
Hodaei et al. (34)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	NR	Yes
Srinivasan et al. (35)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?
Vanaie et al. (36)	Yes	Yes	Yes	Yes	No	Yes	Yes	No	Yes	Yes
Asadi et al. (37)	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes
Funamoto et al. (38)	Yes	Yes	Yes	Yes	No	Yes	Yes	No	Yes	Yes
Shafabakhsh et al. (39)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes
Shafabakhsh et al. (40)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes
Mokhtari et al. (41)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes

NR, not reported.