Table 9.

Methodological quality assessment and risk-of-bias (Herbal medicine).

	Adequate randomization	Concealed allocation	Groups similar at baseline	Patient blinded	Care provider blinded	Outcome assessor blinded	Dropout rate described and acceptable	Intention to treat analysis	Co-interventions avoided or similar	Compliance acceptable	Timing outcome assessment similar	Report free of selective outcome reporting	Total
Park SH et al 2009	Unclear	Unclear	Yes	Yes	Yes	Unclear	Yes	Yes	Yes	Yes	Yes	Yes	9/12
Li XH et al 2010	Unclear	Unclear	Yes	Unclear	Unclear	Unclear	Yes	Yes	Unclear	Yes	Unclear	Yes	5/12