Warfarin life-long vs. control Warfarin life-long vs. control Warfarin life-long vs. control
RCTa, unblinded RCTa, unblinded RCTa, unblinded
Insignificant variation for median survival (9.7 months in the warfarin group vs. 8.9 months in the control) Significant increase in median survival (49.5 weeks in warfarin group vs. 23 weeks in control) No significant difference in median survival