Incidence rate and relative risks, 95% confidence intervals of events associated with anticoagulant and antiplatelet within different risk strata.

Abbreviations: CI, confidence interval; RR, relative risk.*Incidence rate/1000 person-yearsThe detailed breakdown by actual therapy shown in Fig 2 shows that compared to warfarin (reference), aspirin was associated with less bleeding. However, bleeding risk was not significantly different for other categories of drug exposures.Incidence rate and relative risks, 95% confidence intervals of events associated with anticoagulant and antiplatelet within different risk strata.