Table 2.

The risk of bias for both studies.

Study	Pang et al. [19]	Temmerman et al. [20]
Random sequence generation	High risk	Low risk
Allocation concealment	High risk	Low risk
Blinding of participants	High risk	Low risk
Blinding of personnel/care providers	High risk	High risk
Detection bias	High risk	High risk
Incomplete outcome data	Low risk	Low risk
Selective reporting	Low risk	Low risk
Group similarity at the baseline	High risk	High risk
Cointerventions	Low risk	Low risk
Compliance	Low risk	Low risk
Intention-to-treat analysis	Low risk	Low risk
Timing of outcome assessments	Low risk	Low risk
Other biases	High risk	High risk