Table 3.

Risk of Bias Assessment for All Studies Included in the Systematic Review and Meta-Analysis

Study	Randomization Sequence Generation	Allocation Concealment	Masking of Assessors	Outcome Data
Boudreault et al. (2018)	+	?	−	+
Carlbring & Smit (2008)	+	+	−	+
Carlbring et al. (2010)	+	+	−	−
Casey et al. (2017)	+	−	−	−
Dowling et al. (2007)	?	?	−	+
Grant et al. (2009)	?	?	−	+
Oei et al. (2010)	+	?	?	?
Oei et al. (2018)	?	?	−	−
Wong et al. (2015)	?	?	−	+

Note. + = low risk of bias; − = high risk of bias; ? = unclear risk of bias