How was the duration of treatment (3, 6, or 12 months) determined in the EINSTEIN–DVT and EINSTEIN–PE studies?

In EINSTEIN-DVT and EINSTEIN-PE, the enrolling physician determined treatment duration at the time of randomization based on the patient’s profile and local treatment preferences.^1,2

For the DVT study, approximately 63% of all patients were allocated to 6 months of treatment, while 25% were allocated to 12 months of treatment.³ In the PE study, approximately 57% and 37% of all patients were allocated to 6 months and 12 months of treatment, respectively.⁴