Table 3.

Quality assessment of included clinical trials

Author	Type of study	Randomization	Allocation concealment	Blinding	Incomplete outcome data	Risk of bias
Innes et al. 26	RCT	Yes	Yes	No	Unclear	Low
Santamaria et al.37	RCT	Yes	Yes	No	Low	Low
Boyd et al.38	Quasi-experimental	No	Yes	No	Low	Medium