Review Article
The Usefulness of Xuefu Zhuyu Tang for Patients with Angina Pectoris: A Meta-Analysis and Systematic Review
Table 2
Methodological quality of the included studies.
| Study ID | Risk of bias for randomization | Risk of bias for concealment | Risk of bias for blinding | Risk of bias for incomplete data | Risk of bias for selective outcome reporting | Risk of bias for other problems |
| Li, 2008 [21] | Low risk | Uncertain | Uncertain | Low risk | Low risk | Low risk | Wang, 2011 [28] | Low risk | Uncertain | Uncertain | Low risk | Low risk | Low risk | Zhao, 2009 [26] | Low risk | Uncertain | Uncertain | Low risk | Low risk | Low risk | Yang, 2010 [18] | Low risk | Uncertain | Uncertain | Low risk | Low risk | Low risk | Chu et al., 2009 [23] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Zheng and Wang, 2009 [24] | Low risk | Uncertain | Uncertain | Low risk | Low risk | Low risk | Lv, 2009 [22] | Low risk | Uncertain | Uncertain | Low risk | Low risk | Low risk | Wang et al., 2000 [20] | Low risk | Uncertain | Low risk | Low risk | Low risk | Low risk | Du et al., 2013 [29] | Low risk | Uncertain | Uncertain | Low risk | Low risk | Low risk | Wang and Jing, 2007 [19] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Li and Zhang, 2011 [27] | Low risk | Uncertain | Uncertain | Low risk | Low risk | Low risk | Liu et al., 2007 [25] | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Zhang, 2012 [17] | Low risk | Uncertain | Uncertain | Low risk | Low risk | Low risk | Li, 2009 [30] | Low risk | Uncertain | Low risk | Low risk | Low risk | Low risk |
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