Demographic and clinical characteristics of patients
| . | All, N = 1397 . | DVT,* n = 277 . | No DVT,* n = 1120 . |
|---|---|---|---|
| Age, median (IQR), y | 64 (52-73) | 65 (53-73) | 64 (51-73) |
| Symptom duration, median (IQR), d | 7 (3-14) | 5 (3-7) | 7 (3-14) |
| Female sex, n (%) | 770 (55) | 114 (41) | 656 (59) |
| Positive D-dimer, n (%) | 982 (70) | 275 (99) | 707 (63) |
| Low probability for DVT,† n (%) | 383 (27) | 23 (8) | 360 (32) |
| Moderate probability for DVT,† n (%) | 670 (48) | 121 (44) | 549 (49) |
| High probability for DVT,† n (%) | 344 (25) | 133 (48) | 211 (19) |
| Positive D-dimer and/or high probability for DVT† | 1024 (73) | 276 (99) | 748 (67) |
| DVT likely,‡ n (%) | 698 (50) | 216 (78) | 482 (43) |
| DVT unlikely,‡ n (%) | 699 (50) | 61 (22) | 638 (57) |
| Positive D-dimer and/or DVT likely,‡ n (%) | 1105 (79) | 276 (99) | 829 (74) |
| Previous VTE, n (%) | 203 (15) | 73 (26) | 130 (12) |
| VTE in first-degree relatives, n (%) | 266 (19) | 57 (21) | 209 (19) |
| Active cancer within 6 mo, n (%) | 62 (4) | 21 (8) | 41 (4) |
| Travel >4 h, n (%) | 368 (26) | 76 (27) | 292 (26) |
| Immobilization due to trauma, n (%) | 64 (5) | 17 (6) | 47 (4) |
| Hormonal contraceptives, n (%) | 37 (3) | 8 (3) | 29 (3) |
| Hormone-replacement therapy, n (%) | 121 (9) | 15 (5) | 106 (10) |
| Known thrombophilia, n (%) | 45 (3) | 15 (5) | 30 (3) |
| Pregnancy or puerperium, n (%) | 19 (1) | 1 (0.4) | 18 (2) |
| Recent surgery, n (%) | 109 (8) | 32 (12) | 77 (7) |
| . | All, N = 1397 . | DVT,* n = 277 . | No DVT,* n = 1120 . |
|---|---|---|---|
| Age, median (IQR), y | 64 (52-73) | 65 (53-73) | 64 (51-73) |
| Symptom duration, median (IQR), d | 7 (3-14) | 5 (3-7) | 7 (3-14) |
| Female sex, n (%) | 770 (55) | 114 (41) | 656 (59) |
| Positive D-dimer, n (%) | 982 (70) | 275 (99) | 707 (63) |
| Low probability for DVT,† n (%) | 383 (27) | 23 (8) | 360 (32) |
| Moderate probability for DVT,† n (%) | 670 (48) | 121 (44) | 549 (49) |
| High probability for DVT,† n (%) | 344 (25) | 133 (48) | 211 (19) |
| Positive D-dimer and/or high probability for DVT† | 1024 (73) | 276 (99) | 748 (67) |
| DVT likely,‡ n (%) | 698 (50) | 216 (78) | 482 (43) |
| DVT unlikely,‡ n (%) | 699 (50) | 61 (22) | 638 (57) |
| Positive D-dimer and/or DVT likely,‡ n (%) | 1105 (79) | 276 (99) | 829 (74) |
| Previous VTE, n (%) | 203 (15) | 73 (26) | 130 (12) |
| VTE in first-degree relatives, n (%) | 266 (19) | 57 (21) | 209 (19) |
| Active cancer within 6 mo, n (%) | 62 (4) | 21 (8) | 41 (4) |
| Travel >4 h, n (%) | 368 (26) | 76 (27) | 292 (26) |
| Immobilization due to trauma, n (%) | 64 (5) | 17 (6) | 47 (4) |
| Hormonal contraceptives, n (%) | 37 (3) | 8 (3) | 29 (3) |
| Hormone-replacement therapy, n (%) | 121 (9) | 15 (5) | 106 (10) |
| Known thrombophilia, n (%) | 45 (3) | 15 (5) | 30 (3) |
| Pregnancy or puerperium, n (%) | 19 (1) | 1 (0.4) | 18 (2) |
| Recent surgery, n (%) | 109 (8) | 32 (12) | 77 (7) |