Table 1 Patient characteristics

Age, mean ± SD (range), (years)

54.1 ± 17.0 (27–84)

Sex

8 male, 22 female

Body mass index

23.7 ± 1.4 (20.3–27.0)

Symptom duration, mean ± SD (range), (days)

7.3 ± 4.0 (2–14)

Symptom duration ≤7 days, n (%)

16 (53.3%)

 Leg pain, n (%)

27 (90.0%)

 Swollen leg, n (%)

30 (100%)

 Local warmth, n (%)

24 (80.0%)

 Recurrence (%), n (%)

1 (3.3%)

 Pulmonary embolism, n (%)

4 (13.3%)

 Recent trauma (<  1 month), n (%)

1 (3.3%)

 Recent surgery (<  1 month), n (%)

6 (20.0%)

 Previous venous thromboembolism, (pulmonary embolism or DVT), n (%)

1 (3.3%)