Table 2.

Jadad score of the included studies

Study	Random method	Blind	Exit in follow-up	Jadad score
Gravel et al. [10]	Yes with description	Single	No	3
De Hert et al. [11]	Yes without description	Not described	No	2
Conzen et al. [12]	Yes without description	Not described	No	2
De Hert et al. [13]	Yes without description	Not described	Yes with description	2
De Hert et al. [14]	Yes with description	Double	No	5
Parker et al. [15]	Yes without description	Double	Yes with description	4
Kawamura et al. [16]	Yes without description	Single	Not described	1
Cromheecke et al. [17]	Yes with description	Not described	No	3
Lorsomradee et al. [18]	Yes with description	Double	No	5
Law-Koune et al. [19]	Yes without description	Single	Not described	1
Lucchinetti et al. [20]	Yes without description	Not described	Not described	1
Yildirim et al. [21]	Yes with description	Double	No exit	5
Ballester et al. [22]	Yes with description	Single	Yes with description	3
Jovic et al. [23]	Yes without description	Not described	No	2
Suryaprakash [24]	Yes with description	Not described	Not described	2