Zhen Gan Xi Feng Decoction, a Traditional Chinese Herbal Formula, for the Treatment of Essential Hypertension: A Systematic Review of Randomized Controlled Trials

Table 3

Quality assessment of included randomized controlled trials.

Included trials	Sequence generation	Allocation concealment	Blinding of participants personnel and outcome assessors	Incomplete outcome data	Selective outcome reporting	Other sources of bias	Risk of bias
Guo et al. 2002 [14]	Table of random number	Unclear	Unclear	No	No	Unclear	Unclear
Mao 2005 [15]	Table of random number	Unclear	Unclear	Yes	No	Unclear	Unclear
Luo 2008 [16]	Unclear	Unclear	Unclear	Yes	No	Unclear	High
Liu and Zhong 2008 [17]	Unclear	Unclear	Unclear	Yes	No	Unclear	High
Li and Zheng 2012 [18]	Unclear	Unclear	Unclear	Yes	No	Unclear	High
Zhou 2000 [19]	Unclear	Unclear	Unclear	Yes	No	Unclear	High