Figure 3.

Overall effect over β-blockers on platelet aggregation. Forest plot of standardized mean differences (SMD) of the effects of β-blockers on platelet aggregation. The black diamonds represent the effect estimate (SMD), where a negative SMD represents a decrease of platelet aggregation. The size of the grey squares around the effect estimates corresponds to the weight of the study in the meta-analysis. Horizontal lines represent corresponding 95% confidence intervals (CI). The estimate and CI of the pooled effect is indicated by the diamond