| Number | Author, year | Age | | Male/female | Thesis | Clinical setting | Method of syndrome differentiation | Syndrome overlap | Indexes of CAG |
| 1 | Wang et al., 2003 [11] | 59.2 ± 7.8 | 158 | 98/60 | No | Cross-sectional | CSD | No | CVN, DAS (70% as the classification) | 2 | Su, 2004 [12] | 69.1 (unknown SD) | 31 | Unknown | Yes | Case-control | CSD | No | CVN | 3 | Zhang et al., 2004 [13] | 58.5 ± 10.2 | 269 | Unknown | No | Case-control | SED | Yes | CVN | 4 | Liuand Jiang, 2005 [14] | 63.8 ± 9.6 | 259 | 209/50 | No | Cross-sectional | CSD | No | CVN, Gensini score | 5 | Wang, 2005 [15] | 64.6 ± 11.5 | 81 | 52/29 | Yes | Cross-sectional | SED | Yes | CVN | 6 | Li et al., 2006 [16] | 59.6 ± 10.1 | 96 | 77/19 | No | Cross-sectional | CSD | No | CVN, DAS, Gensini score | 7 | Liu et al., 2006 [17] | 65.4 ± 10.8 | 69 | 52/61 | No | Cross-sectional | SED | Yes | CVN | 8 | Xue, 2006 [18] | Unknown | 68 | 37/31 | Yes | Cross-sectional | CSD | No | CVN, DAS, Gensini score | 9 | Zhang et al., 2006 [19] | 57.6 (unknown SD) | 279 | — | No | Case-control | CSD | No | CVN | 10 | Guo, 2007 [20] | Unknown | 147 | 104/43 | Yes | Cross-sectional | CSD | No | CVN, DAS | 11 | Wang et al., 2007 [21] | Unknown | 81 | Unknown | No | Case-control | SED | Yes | CVN | 12 | Zhangand Xu, 2007 [22] | 59.8 ± 12.3 | 126 | 99/27 | No | Cross-sectional | CSD | No | CVN, DAS | 13 | Pan et al., 2008 [23] | 68.0 ± 10.7 | 61 | 40/21 | No | Cross-sectional | SED | Yes | CVN | 14 | Wang et al., 2008 [24] | 58.2 ± 10.58 | 324 | 250/74 | No | Cross-sectional | SED | Yes | CVN | 15 | Liao, 2009 [25] | Unknown | 143 | 68/75 | Yes | Cross-sectional | CSD | No | CVN, DAS | 16 | Wang, 2009 [26] | Unknown | 100 | 57/43 | Yes | Cross-sectional | CSD | No | CVN, Gensini score | 17 | Wang et al., 2009 [27] | Unknown | 252 | 192/60 | No | Cross-sectional | CSD | No | CVN, DAS | 18 | Wang et al., 2009 [28] | 63.4 ± 11.7 | 229 | 128/101 | No | Cross-sectional | SED | Yes | CVN, Gensini score | 19 | Zhu et al., 2009 [29] | Unknown | 100 | 85/15 | No | Cross-sectional | CSD | No | CVN, DAS | 20 | Du, 2010 [30] | 59.6 ± 11.2 | 369 | 291/78 | Yes | Cross-sectional | SED | Yes | Gensini score | 21 | Hou, 2010 [31] | Unknown | 87 | 48/39 | No | Cross-sectional | CSD | No | CVN, DAS, Gensini score | 22 | Ren et al., 2010 [32] | 58.3 ± 10.7 | 405 | 307/98 | No | Cross-sectional | SED | Yes | CVN, Gensini score | 23 | Tong, 2010 [33] | 62.8 ± 9.3 | 97 | 57/40 | Yes | Cross-sectional | CSD | No | CVN, DAS | 24 | Zhang et al., 2010 [34] | 59.8 ± 12.3 | 368 | 252/116 | No | Cross-sectional | CSD | No | CVN, DAS (70% as the classification), Gensini score | 25 | Bi et al., 2011 [35] | 67.2 ± 8.3 | 67 | Unknown | No | Cross-sectional | SED | Yes | DAS | 26 | Xu et al., 2011 [36] | 59. 6 ± 10.1 | 250 | 200/50 | No | Cross-sectional | CSD | No | CVN, Gensini score | 27 | Yan et al., 2011 [37] | 69.0 ± 10.5 | 189 | 103/86 | No | Cross-sectional | SED | Yes | CVN, DAS | 28 | Zhou et al., 2011 [38] | Unknown | 95 | 73/22 | No | Cross-sectional | CSD | No | CVN, DAS, Gensini score | 29 | Tanand Leng, 2012 [39] | Unknown | 70 | 38/32 | No | Cross-sectional | CSD | No | CVN | 30 | Wang et al., 2013 [40] | Unknown | 150 | 68/82 | No | Cross-sectional | CSD | No | CVN |
| | | Total | 5055 | | | | | | |
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