From: Prevalence of venous obstructions in (recurrent) venous thromboembolism: a case-control study
 | Recurrent VTE N = 32 | No recurrent VTE N = 24 | P-value |
---|---|---|---|
Age, years | 68.0 (61.3–72.0) | 65.0 (45.3–70.8) | 0.223 |
Sex | Â | Â | 0.298 |
 - Male | 28 (87.5) | 18 (75.0) | 0.298 |
 - Female | 4 (12.5) | 6 (25.0) | 0.298 |
Unprovoked DVT | 23 (71.9) | 10 (41.7) | 0.030 |
Affected side initial event | Â | Â | 0.697 |
 - Left | 13 (40.6) | 11 (45.8) | 0.697 |
 - Right | 19 (59.4) | 13 (54.2) | 0.697 |
Affected side recurrent event | |||
 - Ipsilateral (± pulmonary embolism) | 17 (53.1) | n/a | – |
 - Contralateral (± pulmonary embolism) | 9 (28.1) | n/a | – |
 - Pulmonary embolism | 6 (18.8) | n/a | – |
History of pulmonary embolism | 8 (25.0)a | 4 (16.7)b | 0.525 |
Family history of DVT | 10 (31.3) | 3 (12.5) | 0.122 |
Antithrombotic therapy | 32 (100.0) | 17 (70.8) | 0.001 |
Antithrombotic therapy, type | Â | Â | 0.071 |
 - VKA | 26 (81.3%) | 16 (66.7) | 0.212 |
 - DOACc | 6 (18.8%) | 0 (0.0) | 0.035 |
Elastic compression stockings, use | 19 (59.4) | 3 (12.5) | < 0.001 |