Baseline risk factors have a significant impact on TVE risk under epoetin therapy. More than 2 risk factors increased the risk of TVEs in patients receiving epoetin (hazard ratio [HR] 2.89, confidence interval [CI] 1.04–8.02, p value [p] = 0.04). In patients on epoetin without antithrombotic therapy, the risk for TVEs was higher (HR 4.11, CI 1.37–12.4, p = 0.01) compared to those who received antithrombotics (HR 1.37, CI 0.59–3.18, p = 0.45).
Our analysis has identified several risk factors which may impact the risk of TVEs under epoetin therapy. These data suggest that antithrombotic therapy may have the potential to reduce the risk of TVEs under epoetin therapy. These findings are hypothesis-generating and need to be confirmed in a prospective, randomised study.