Table 4.

Comparison of standardized rates of thrombosis in our study versus previous randomized controlled trials of warfarin in antiphospholipid syndrome

	Our study	Crowther, 2003	Finazzi, 2005	Cohen, 2016	Pengo, 2018
No. of patients (No. with arterial events at baseline)	82 (5)	114 (27)	109 (44)	116 (0)	Warfarin arm: 61 (14)
Length of follow-up	19 months (mean)	2.7 years (mean)	3.6 years (median)	6 months	569 days (mean)
No. of recurrent VTE events (%)	2 (2.4)	5 (4.4)	3 (2.3)	0 (0)	0 (0)
No. of recurrent arterial events (%)	2 (2.4)	3 (2.6)	7 (6.4)	0 (0)	0 (0)
Recurrent thrombotic events/100 patient-years	3.1	2.6	2.5	0	0

Abbreviation: VTE Venous thromboembolism