Table 4: Risk ratios of Chinese herbal medicines administered to prevent recurrent angina after PCI.

Chinese herbal medicineNumber of studiesNumber of patientsRisk ratio (RR)95% CI of RR

Bu xin yin plus RWM versus RWM1 [76]440.600.33~1.10
Dan hong tong mai capsule plus RWM versus RWM1 [91]1380.240.07~0.82
Dan shen plus RWM versus RWM5 [44, 50, 57, 85, 86]3900.240.15~0.41
Guan tong formula plus RWM versus RWM1 [54]1200.270.08~0.93
Jia wei xue fu zhu yu particle plus RWM versus RWM1 [51]600.450.18~1.15
Jiang lian he ji plus RWM versus RWM1 [63]690.710.30~1.70
Lei gong teng plus RWM versus RWM1 [64]750.390.17~0.94
Liang xue shen ji formula plus RWM versus RWM1 [46]970.520.16~1.65
Shu xue tong injection plus RWM versus RWM1 [56]430.370.11~1.25
Shu xin yin plus RWM versus RWM1 [75]440.600.33~1.10
Tong guan capsule plus RWM versus RWM1 [70]500.670.22~2.01
Tong mai yi xin plus RWM versus RWM2 [54]2720.410.26~0.65
Tong xin luo plus RWM versus RWM3 [79, 82, 90]3440.270.13~0.54
Wen tong jian plus RWM versus RWM1 [87]4670.300.17~0.52
Wen yang huo xue formula plus RWM versus RWM1 [47]1200.530.38~0.75
Xue fu zhu yu pin plus RWM versus RWM2 [72, 84]1570.440.25~0.78
Xue yu tong he ji plus RWM versus RWM1 [69]360.670.23~1.97
Xue zhi kang plus RWM versus RWM1 [48]600.380.16~0.94
Xiong shao capsule plus RWM versus RWM2 [40, 80]1730.480.31~0.75
Yi qi hua yu formula plus RWM versus RWM1 [41]600.440.15~1.29
Yi xin capsule plus RWM versus RWM1 [77]940.460.20~1.05
Self-prepared guan tong decoction plus RWM versus RWM1 [83]400.330.11~1.05
Overall (CHM plus RWM versus RWM)3129530.400.35~0.47
Xiong shao capsule plus RWM versus RWM plus placebo2 [67, 81]4220.250.17~0.37
CHM plus RWM versus RWM plus placebo24220.250.17~0.37

CHM = Chinese herbal medicine; CI = confidence interval; RWM = routine Western medicine.