Warfarin showed no clear difference in all‐cause death compared with placebo or no treatment (low certainty).
The review found no eligible studies for this question.
Warfarin may leads to higher major bleeding eventsc compared with placebo or no treatment (low certainty).
Summary of findings: warfarin showed no clear difference in all‐cause mortality compared with aspirin (moderate certainty).
Summary of findings: warfarin showed no clear difference in non‐fatal cardiovascular events (non‐fatal stroke, myocardial… compared with aspirin (moderate certainty).
Summary of findings: warfarin probably leads to higher major bleeding events compared with aspirin (moderate certainty).
Summary of findings: warfarin showed no clear difference in all‐cause mortality compared with clopidogrel (low certainty).
Summary of findings: warfarin showed no clear difference in non‐fatal cardiovascular events (non‐fatal stroke, myocardial… compared with clopidogrel (low certainty).
Summary of findings: warfarin may leads to higher major bleeding events compared with clopidogrel (low certainty).