Table 3. Associations of residual venous obstruction with clinical outcomes.

	Total	Provoked DVT	Unprovoked DVT
Recurrent VTE, HR (95% CI)	1.39 (0.96–2.02)	1.50 (0.67–3.37)	1.37 (0.90–2.08)
PTS, HR (95% CI)	1.66 (1.19–2.32) a	2.16 (1.22–3.83) a	1.41 (0.93–2.12)
Arterial event, HR (95% CI)	2.07 (1.18–3.65) a	2.25 (0.82–6.17)	1.98 (1.01–3.92) a
Cancer, HR (95% CI)	1.26 (0.74–2.17)	0.86 (0.31–2.40)	1.48 (0.77–2.82)

Abbreviations: CI, confidence interval; DVT, deep vein thrombosis; HR, hazard ratio; PTS, post-thrombotic syndrome; VTE, venous thromboembolism.

Note: Each association was adjusted for duration of anticoagulant therapy. Additionally, recurrent VTE was adjusted for unprovoked DVT, previous VTE, venous insufficiency and hypertension; PTS was adjusted for body mass index, venous insufficiency, iliofemoral DVT and smoking; arterial events were adjusted for hypertension, antiplatelet drug use and smoking; cancer was adjusted for age and hypertension.

^ap -Value <0.05.