Aspirin for the Primary Prevention of Cardiovascular Events: A Summary of the Evidence for the U.S. Preventive Services Task
Force

Figure 1. BMD = British Male Doctors' Trial; HOT = Hypertension Optimal Treatment Trial; OR = odds ratio; PHS = Physicians'
Health Study; PPP = Primary Prevention Project; TPT = Thrombosis Prevention Trial. The result of the chi-square test for heterogeneity
was 8.07 ( = 0.089).
Meta-analysis of total coronary heart disease events.P
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Ann Intern Med
January 15, 2002
vol. 136
no. 2
161-172