Systematic Review of Chinese Herbal Medicines for Preventing in-Stent Coronary Restenosis after Percutaneous Coronary Intervention

Table 6

Risk ratios of Chinese herbal medicines administered to prevent angina after PCI.

Chinese herbal medicine	Number of studies	Number of patients	Risk ratio (RR)	95% CI of RR
Followup 1 month
Shan shen tong mai he ji plus RWM versus RWM	1 [74]	102	1.18	0.95~1.45
Shen mai gua lou shi xiao power plus RWM versus RWM	1 [88]	63	1.55	1.11~2.17
Overall (CHMs plus RWM versus RWM)*	2	165	1.31	1.00~1.72
Followup 3 months
Tong guan capsule plus RWM versus RWM	1 [58]	52	1.26	0.98~1.64
Yi qu huo xue formula plus RWM versus RWM	1 [73]	101	1.07	0.98~1.16
Overall (CHMs plus RWM versus RWM)*	2	153	1.13	0.93~1.36
Followup 6 months
Xue fu zhu yu pill plus RWM versus RWM	1 [84]	84	1.02	0.57~1.84
Wen yang huo xue formula plus RWM versus RWM	1 [47]	120	1.05	0.99~1.12
Overall (CHMs plus RWM versus RWM)	2	204	1.05	0.99~1.12
Total overall (CHMs plus RWM versus RWM)*	6	522	1.13	1.02~1.26

*Random effect model
CHM = Chinese herbal medicine; CI = confidence interval; PCI = percutaneous coronary intervention; RWM = routine Western medicine.