Table 3.

Quality assessment of the included studies.

References	Selection	Comparability	Exposure
Nock and Prinstein (79)	**		*
Yates et al. (47)	**		*
Hoff and Muehlenkamp (80)	****	**	**
Claes et al. (73)	***	**	*
Fujimori et al. (74)	****	**	**
Flett et al. (81)	**		*
Miskey et al. (82)	**		*
Luyckx et al. (75)	****	**	**
Eichen et al. (83)	****	**	**
Varela-Besteiro et al. (84)	***	**	**
Kaur and Martin (85)	****	**	**
Vieira et al. (76)	***	**	**
Lucas et al. (86)	**		*
Chang et al. (87)	**		*
Newman et al. (88)	**		*