Table 2.
Characteristics of the patients in this study.
| Characteristics | Patients (N=30,152), n (%) | Venous thromboembolism eventsa (n=626), n (%) | P valueb | ||||
| Age (years) | <.001 | ||||||
|
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>65 | 8859 (29.4) | 409 (4.6) |
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|
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≤65 | 21,293 (70.6) | 217 (1) |
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| Sex | .43 | ||||||
|
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Female | 14,247 (47.3) | 286 (2) |
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|
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Male | 15,905 (52.7) | 340 (2.1) |
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| Department | <.001 | ||||||
|
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Surgery | 13,589 (45.1) | 77 (0.6) |
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|
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Internal medicine | 15,681 (52) | 421 (2.7) |
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|
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Intensive care unit | 882 (2.9) | 128 (14.5) |
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| Venous thromboembolism riskc | <.001 | ||||||
|
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High | 6769 (22.4) | 219 (3.2) |
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|
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Intermediate | 15,368 (51) | 358 (2.3) |
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Low | 8015 (26.6) | 49 (0.6) |
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| Quarter of the study year | <.001 | ||||||
|
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First quarter | 5868 (19.5) | 109 (1.9) |
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Second quarter | 7616 (25.2) | 128 (1.7) |
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Third quarter | 8510 (28.2) | 157 (1.8) |
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Fourth quarter | 8158 (27.1) | 232 (2.8) |
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aAny venous thromboembolism event confirmed by clinical experts.
bP values for the comparison of venous thromboembolism events.
cThe low, intermediate, and high venous thromboembolism risk was defined by departments having <1, 1-5, and >5 venous thromboembolism–related deaths per year, respectively.