Table 2. Expected event rates for primary outcome and relative risk reduction with LAA occlusion on top of usual care.
Therapy component of usual care | % patients years on therapy component | Control rate of primary outcome per year | Expected relative risk reduction with LAA occlusion (%) | Treatment rate of primary outcome per year |
---|---|---|---|---|
No antithrombotic | 5 | 5.1 | 63 | 1.9 |
Antiplatelet | 30 | 3.7 | 63 | 1.4 |
Warfarin | 45 | 1.7 | 25 | 1.3 |
Novel anticoagulant | 20 | 1.5 | 25 | 1.1 |
Overall usual care | 100 | 2.5 | 36 | 1.6 |
LAA, left atrial appendage.