Table 4.

Analysis of platelet aggregation rate induced by AA.

Trials		MD (95% CI)	P value
Chinese formula versus anti-platelet-aggregation drugs
Tong xin luo capsule versus clopidogrel	1	0.86 [−3.38, 5.10]	0.69
Zhilong huoxue capsule versus aspirin	1	−3.23 [−7.34, 0.88]	0.02
Di'ao xinxuekang capsule versus aspirin	1	−3.23 [−7.34, 0.88]	0.02
Meta-analysis	3	−2.53 [−4.28, −0.78]	0.005
Chinese formula plus anti-platelet-aggregation drugs versus anti-platelet-aggregation drugs
Composite salvia dropping pill plus aspirin versus aspirin	1	−11.09 [−14.84, −7.34]	<0.00001
Huo xue capsule plus aspirin versus aspirin	1	−14.22 [−16.59, −11.85]	<0.00001
Xinnao shutong capsule plus aspirin versus aspirin	1	−12.58 [−14.56, −10.60]	<0.00001
Xuefu zhuyu decoction plus aspirin versus aspirin	1	−7.20 [−11.73, −2.67]	0.002
Ginkgo biloba extract plus aspirin versus aspirin	1	−2.53 [−4.53, −0.53]	0.01
Meta-analysis	5	−9.36 [−10.48, −8.25]	<0.00001