Table 1.
Study subject characteristics
| VTE case | VTE ruled out | |
|---|---|---|
| Number | 159 | 140 |
| Females, % (N) | 41% (65) | 61% (86) |
| Age (years) | 60 (50/73) | 59 (45/72) |
| Body Mass Index (kg/m2) | 28 (25/32) | 28 (24/32) |
| D-Dimer (mg/l) | 5 (2/11) | 0•8 (0•5/1) |
| VTE risk factors | ||
| VTE (history) | 35% (51/148) | 19% (27/139) |
| DVT (history) | 31% (46/148) | 18% (25/139) |
| PE (history) | 15% (22/148) | 7% (9/138) |
| Immobilization (last 30 days) | 16% (24/149) | 5% (7/138) |
| Long-distance flight/travel | 14% (21/148) | 10% (14/137) |
| Pregnancy (current) | 0•6% (1/158) | 1% (2/140) |
| Surgery (last 30 days) | 3% (5/148) | 2% (3/136) |
| Thrombophilia | 4% (5/126) | 5% (7/138) |
| Trauma (last 30 days) | 8% (11/147) | 1% (2/138) |
| Cardiovascular risk factors | ||
| Arterial Hypertension | 57% (81/143) | 48% (67/139) |
| Diabetes | 17% (25/144) | 12% (16/139) |
| Smoking | 19% (27/142) | 16% (22/138) |
| Obesity | 37% (58/158) | 37% (51/137) |
| Cardiovascular diseases | ||
| Atrial fibrillation | 6% (8/144) | 11% (15/137) |
| Congestive heart failure | 6% (8/143) | 8% (11/137) |
| Coronary artery disease | 9% (13/145) | 16% (22/136) |
| Stroke | 6% (8/145) | 7% (9/138) |
| Peripheral artery disease | 5% (6/114) | 4% (5/138) |
| Therapy | ||
| Antithrombotic agents (B01A) | 93% (148/159) | 63% (88/140) |
| Acetylsalicylic acid (B01AC06) | 35% (55/159) | 29% (41/140) |
| Clopidogrel (B01AC04) | 3% (4/159) | 4% (6/140) |
| Anticoagulant agents* | 81% (128/159) | 44% (61/140) |
| Vitamin K antagonists (B01AA) | 5% (8/159) | 4% (6/140) |
| Heparin group (B01AB) | 67% (107/159) | 36% (50/140) |
| Direct FXa inhibitors (B01AF) | 25% (39/159) | 4% (6/140) |
| Cardiovascular agents⁎⁎ | 60% (95/159) | 42% (59/140) |
Presented are demographic and clinical characteristics as relative frequencies in percentage (%), rounded to one informative digit, for the venous thromboembolism (VTE) cases and VTE ruled outs. Age and body mass index are presented as median (25% quartile and 75% quartile). Anatomical Therapeutic Chemical Classification System code:
⁎
B01AA, B01AB, B01 AF.
⁎⁎
C01-C10.