TABLE 1.
Patient characteristics and VTE risk factors
| Patient characteristics | N (%) |
|---|---|
| All | 9407 (100) |
| IMPROVE‐DD variables (points) | |
| Prior episode of VTE (3) | 247 (2.6) |
| Thrombophilia (2) a | NA |
| Paralysis of the lower extremity during hospitalization (2) b | 1557 (16.6) |
| Cancer (2) | 727 (7.7) |
| Max d‐dimer > 2× ULN (2) c | 4364 (46.4) |
| Immobilization for at least 7 days (1) | 9407 (100) |
| ICU stay (1) | 2203 (23.4) |
| Age > 60 (1) | 5785 (61.5%) |
| Patient characteristics | |
| BMI | |
| Unknown | 2029 (21.6) |
| ≤35 | 6154 (65.4 |
| >35 | 1224 (13.0) |
| Male | 5580 (59.3) |
| Age | |
| 18‐59 | 3407 (36.2) |
| 60‐75 | 3365 (35.8) |
| 75+ | 2635 (28.0) |
| Comorbidity | |
| Coronary artery disease | 1200 (12.8) |
| Heart failure | 773 (8.2) |
| Peripheral artery/vascular disease | 379 (4.0) |
| Cerebrovascular disease | 551 (5.9) |
| ESRD or CKD | 783 (8.3) |
| Treatment | |
| Hospital anticoagulation | |
| None | 979 (10.4) |
| Prophylaxis dose | 6675 (71.0) |
| Treatment dose | 1753 (18.6) |
| Home or hospital antiplatelet | |
| None | 4531 (48.2) |
| Present | 2804 (29.8%) |
| NA | 2072 (22.0%) |
Abbreviations: BMI, body mass index; CKD, chronic kidney disease; ESRD, end‐stage renal disease; ICU, intensive care unit; ULN, upper limit of normal; VTE, venous thromboembolism.
a
Unknown for all patients.
b
On vent used as surrogate.
c
d‐dimer not done on 2566 subjects.