Table 3:

Incidence rates and incidence rate ratios for recurrent VTE, clinically significant bleeding, and composite outcome for patients in any anticoagulation vs. no anticoagulation group. Incidence rates (per 100 days) are scaled by total person time (the number of days from the initial VTE until an event) and by Plt <50 time (the number of days the patient had a platelet count <50 × 10⁹/L). The number, incidence rates, and incidence rate ratio for Plt <50 time reflect only events that occurred when platelets were <50 × 10⁹/L. The parenthetical values are exact 95% confidence intervals.

Recurrent VTE	N	Person Time	Incidence by Person Time	N	Pit <50	Incidence by Pit <50 Time
Any Anticoagulation	1	3293	0.03 (0.00, 0.17)	0	843	0.00 (0,00, 0.44)
No Anticoagulation	5	2777	0.18 (0.06, 0.42)	2	1244	0.16(0,02, 0.58)
Incidence Rate Ratio:			0.17 (0.00, 1.51)			0.00 (0,00, 7,86)
Clinically Significant Bleeding
Any Anticoagulation	12	3293	0.36 (0.19, 0.64)	10	843	1.19 (0.57, 2.18)
No Anticoagulation	1	2777	0.04 (0,00, 0,20)	1	1244	0.08 (0.00, 0.45)
Incidence Rate Ratio:			10.12 (1.50, 432.60)			14.76(2.10, 640.41)
Composite Outcome
Any Anticoagulation	13	3293	0,39 (0.21,0.68)	10	843	1.19(0.57, 2.18)
No Anticoagulation	6	2777	0,22 (0.08, 0.47)	3	1244	0.24(0.05, 0.70)
Incidence Rate Ratio:			1.83 (0.65, 5.86)			4.92 (1.27, 27,81)