Table 2.

Risk of Bias for Included Randomized Controlled Trials (n = 16) Using Cochrane Collaboration Tool

Citation	Random sequence generation	Allocation concealment	Blinding (participants and personnel)	Blinding (outcome assessment)	Attrition	Selective reporting
Evans et al.38	Unclear	Unclear	High risk	Unclear	Unclear	Unclear
Feuille and Pargament39	High risk	High risk	Unclear	Low risk	High risk	Unclear
Forsyth and Hayes40	Low risk	Unclear	High risk	Unclear	Low risk	Unclear
Garland et al.41	Low risk	Low risk	High risk	Unclear	Low risk	Unclear
Liu et al.43	Low risk	Low risk	Unclear	Low risk	High risk	Unclear
Petter et al.44	Unclear	Unclear	Unclear	Unclear	Low risk	Unclear
Petter et al.45	Low risk	Low risk	Unclear	Low risk	Low risk	Unclear
Prins et al.46	Unclear	Unclear	Unclear	Unclear	Low risk	Unclear
Reiner et al.47	Low risk	Low risk	Unclear	Unclear	Low risk	Unclear
Sharpe et al.48	Low risk	Unclear	Unclear	Unclear	Low risk	Unclear
Swain and Trevena49	Unclear	High risk	Unclear	Unclear	Unclear	Unclear
Teixeira50	Low risk	Low risk	High risk	Unclear	Low risk	Unclear
Ussher et al.51	Low risk	Unclear	Unclear	Unclear	Low risk	Unclear
Warth et al.52	Unclear	Low risk	High risk	Unclear	Low risk	Unclear
Zeidan et al.55	Unclear	Low risk	Unclear	Unclear	Low risk	Unclear
Zeidan et al.56	Low risk	Low risk	Unclear	Low risk	High risk	Unclear

Cochrane Collaboration Tool: Higgins et al.³¹