| Sign | Stage of DVT | Total | |
| Acute | Chronic | ||
| Absent venous flow | 34 (91.9%) | 3 (8.1%) | 37 (100%) |
| Normal venous flow | 1 (11.1%) | 8 (88.9%) | 9 (100%) |
| Total | 35 (76.1%) | 11 (23.9%) | 46 (100%) |