Table 2.
Patients with known risk factors at baseline for thromboembolic events
| Thromboembolic risk factor: | All patients (n = 3098) | Patients with TEE (n = 46) | Patients with no TEE (n = 3052) | P-value* |
| Any thromboembolic risk factor | 2813 (90.8%) | 42 (91.3%) | 2771 (90.8%) | >0.99 |
| Cardiovascular (CV) risk factor: | 2135 (68.9%) | 31 (67.4%) | 2104 (68.9%) | 0.87 |
| Personal/family history of TEEs | 64 (2.1%) | 2 (4.3%) | 62 (2.0%) | 0.25 |
| ≥ 1 other CV risk factor | 2122 (68.5%) | 31 (67.4%) | 2091 (68.5%) | 0.87 |
| Chronic obstructive pulmonary disease | 365 (11.8%) | 6 (13.0%) | 359 (11.8%) | 0.82 |
| Cancer | 1597 (51.5%) | 30 (65.2%) | 1567 (51.3%) | 0.07 |
| Metabolic/endocrinological risk factor | 797 (25.7%) | 15 (32.6%) | 782 (25.6%) | 0.31 |
| Other thromboembolic risk factor | 270 (8.7%) | 6 (13.0%) | 264 (8.7%) | 0.29 |
| Abnormal pre-operative ECG | 477 (15.4%) | 10 (21.7%) | 467 (15.3%) | 0.22 |
* From Fishers Exact test of 2 × 2 tables comparing for each risk factor to which extent the risk factor was predictive of the occurrence of TEEs