TABLE 3.

Influence of disease activity at time of index VTE at risk of recurrent VTE

SLEDAI‐2K	Events N/total	Follow‐up (years)	Incidence rate recurrence per 100 PY (95% CI)	Unadjusted HR (95% CI)	Adjusted a HR (95% CI)
Continuous			—	0.9 (0.8–1.0)	0.9 (0.8–1.1)
≤4	5/12	58	8.6 (2.8–20.1)	Ref
>4	9/46	387	2.3 (1.1–4.4)	0.3 (0.1–1.0)	0.4 (0.1–1.8)

Abbreviations: CI, confidence interval; HR, hazard ratio; PY, person‐years; SLE, systemic lupus erythematosus; SLEDAI‐2K, Systemic Lupus Erythematosus Disease Activity Index 2000.

^a Adjusted for presence of provoking factor and secondary APS at index VTE. SLEDAI‐2K score >4 is associated with active SLE (i.e., a flare).