Table 2.

Assessment of Risk of Bias for Randomized Controlled Trials.

#	Author (Year)	Intervention	Randomization Process	Deviations from Intended Intervention	Missing Outcome data	Measurement of the Outcome	Selection of the Reported Result	Overall
Psychosocial Interventions
1	Chawarski et al. (2008)	Risk Reduction Counseling	Some Concerns	Low Risk	Low Risk	Low Risk	Low Risk	Some Concerns
2	Fiellin et al. (2006)	Psychosocial Counseling	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk
3	Fiellin et al. (2013)	Cognitive Behavioral Therapy	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk
4	Galanter et al. (2004)	Network Therapy	Some Concerns	Low Risk	Low Risk	Low Risk	Some Concerns	Some Concerns
5	Ling et al. (2013)	Cognitive Behavioral Therapy, Contingency Management	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk
6	Stein et al. (2015)	Distress Tolerance Treatment	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk
7	Tetrault et al. (2012)	Psychosocial Counseling	Some Concerns	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk
8	Weiss et al. (2011)	Psychosocial Counseling	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk	Low Risk
Technological Interventions
15	Ruetsch et al. (2012)	Telephonic Coaching	Some Concerns	Some Concerns	High Risk	High Risk	Some Concerns	High Risk
16	Shi et al. (2019)	Web-based Cognitive Behavioral Therapy	High Risk	Some Concerns	Low Risk	Low Risk	Low Risk	High Risk
Complementary and Integrative Interventions
18	Price and Smith-DiJulio (2016)	Mindful Awareness	Some Concerns	Some Concerns	Low Risk	Some Concerns	Some Concerns	Some Concerns

Risk of bias for randomized control trials was evaluated utilizing the Cochrane ROB-2 risk of bias tool.