Correlations between Phlegm Syndrome of Chinese Medicine and Coronary Angiography: A Systematic Review and Meta-Analysis

Table 3

Tabular display of quality assessment.

Number	Study, year	Patient selection			Syndrome differentiation		Reference standard	Flow and timing
		(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
1	Wang et al., 2003 [11]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Yes	Unclear
2	Su, 2004 [12]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Yes	Unclear
3	Zhang et al., 2004 [13]	Yes	Yes	Yes	Unclear	Unclear	Unclear	Yes	Yes
4	Liu and Jiang, 2005 [14]	Unclear	No	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
5	Wang, 2005 [15]	Yes	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
6	Li et al., 2006 [16]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
7	Liu et al., 2006 [17]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Yes	Unclear
8	Xue, 2006 [18]	Unclear	Yes	Yes	Unclear	Yes	Unclear	Unclear	Unclear
9	Zhang et al., 2006 [19]	Unclear	Yes	Yes	Unclear	Yes	Unclear	Yes	Yes
10	Guo, 2007 [20]	Unclear	No	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
11	Wang et al., 2007 [21]	Unclear	No	Yes	Unclear	Unclear	Unclear	Yes	Yes
12	Zhang and Xu, 2007 [22]	Unclear	No	No	Unclear	Unclear	Unclear	Unclear	Unclear
13	Pan et al., 2008 [23]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Yes	Unclear
14	Wang et al., 2008 [24]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Yes	Unclear
15	Liao, 2009 [25]	Yes	No	Yes	Unclear	Unclear	Unclear	Yes	No
16	Wang, 2009 [26]	Unclear	Yes	Yes	Unclear	Yes	Unclear	Unclear	Unclear
17	Wang et al., 2009 [27]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Yes
18	Wang et al., 2009 [28]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
19	Zhu et al., 2009 [29]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
20	Du, 2010 [30]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Yes	No
21	Hou, 2010 [31]	Unclear	Yes	No	Unclear	Unclear	Unclear	Unclear	Unclear
22	Ren et al., 2010 [32]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
23	Tong, 2010 [33]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	No
24	Zhang et al., 2010 [34]	Unclear	No	No	Unclear	Unclear	Unclear	Unclear	Unclear
25	Bi et al., 2011 [35]	Yes	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
26	Xu et al., 2011 [36]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
27	Yan et al., 2011 [37]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
28	Zhou et al., 2011 [38]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
29	Tan and Leng, 2012 [39]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear
30	Wang et al., 2013 [40]	Unclear	Yes	Yes	Unclear	Unclear	Unclear	Unclear	Unclear

Note: (1) consecutive or randomized patients; (2) avoiding inappropriate exclusions; (3) inclusion criteria of patients described; syndrome differentiation: (4) syndrome differentiation results interpreted without knowledge of the results of CAG; (5) syndrome differentiation by more than two independent doctors; (6) CAG results interpreted without knowledge of the results of the syndrome differentiation; (7) an appropriate interval between syndrome differentiation and CAG; (8) perspective design.