Table 1. Percentage and number of patients with below-knee DVT who presented with PE and who received treatment with anticoagulation, stratified by risk factors and radiology report type.
| Characteristics | Total, n (%) | PE, n (%) | Treated, n (%) |
|---|---|---|---|
| Gender | |||
| Female | 45 (44.1) | 6 (13.3) | 39 (86.7) |
| Male | 57 (55.9) | 12 (21.1) | 48 (84.2) |
| P value | – | 0.31 | 0.73 |
| History of DVT | |||
| No | 73 (71.6) | 15 (20.5) | 62 (84.9) |
| Yes | 29 (28.4) | 3 (10.3) | 25 (86.2) |
| P value | – | 0.22 | 0.92 |
| Recent surgery | |||
| No | 68 (66.7) | 11 (16.2) | 58 (85.3) |
| Yes | 34 (33.3) | 7 (20.6) | 29 (85.3) |
| P value | – | 0.58 | 1.0 |
| Malignancy | |||
| No | 69 (67.6) | 8 (11.6) | 59 (85.5) |
| Yes | 33 (32.4) | 10 (30.3) | 28 (84.8) |
| P value | – | 0.020 | 0.93 |
| Radiology reports | |||
| Positive DVT | 24 (23.5) | 7 (29.2) | 24 (100.0) |
| Descriptive | 65 (63.7) | 10 (15.4) | 57 (87.7) |
| Negative DVT | 13 (12.8) | 1 (7.7) | 6 (46.2) |
| P value | – | 0.013 | <0.001 |
| All cases | 102 (100.0) | 18 (17.6) | 87 (85.3) |
Ultrasound reports were categorized as “positive for DVT”, “negative”, or “descriptive” (objective) based on the report’s impression or conclusion. All reports described a clot consistent with below-knee DVT in the body of the report. DVT, deep vein thrombosis; PE, pulmonary embolism.