Table II.

Rates and hazard ratios of recurrent venous thromboembolism.

	Events, n	Follow‐up, years	Rate, n/100 years	Unadjusted HR (95% CI)	Adjusted* HR (95% CI)
Total follow‐up available
No autoimmune disease	2204	42813	5 1 (4 9–5 4)	Ref.	Ref.
Autoimmune disease	77	1179	6 5 (5 2–8 1)	1 29 (1 03–1 62)	1 33 (1 06–1 67)
Only first 2 years
No autoimmune disease	1691	33463	5 1 (4 8–5 3)	Ref.	Ref.
Autoimmune disease	64	954	6 7 (5 3–8 5)	1 34 (1 04–1 72)	1 37 (1 06–1 76)
Only first year
No autoimmune disease	1337	25829	5 2 (4 9–5 5)	Ref.	Ref.
Autoimmune disease	44	724	6 1 (4 6–8 1)	1 18 (0 88–1 60)	1 22 (0 91–1 65)

CI, confidence interval; HR, hazard ratio.

^*Adjusted for sex and unprovoked/cancer‐provoked/provoked venous thromboembolism.