Table 1.
Patient characteristics.
| Characteristic | Retrievable IVC filters (n = 179) | Permanent IVC filters (n = 207) | p value |
|---|---|---|---|
| Median age (years) | 64 | 65 | |
| Male | 85 (47%) | 96 (46%) | 0.91 |
| Prior history of VTE | 116 (65%) | 83 (40%) | <0.00001 |
| TNM or Ann Arbor staging | <0.0000001 | ||
| Stage I or II | 39 (22%) | 9 (4%) | |
| Stage III or IV | 89 (50%) | 157 (76%) | |
| Hematologic malignancy | 51 (28%) | 41 (20%) | |
| Location of VTE | 0.12 | ||
| DVT | 107 (60%) | 100 (48%) | |
| PE | 30 (17%) | 41 (20%) | |
| DVT & PE | 38 (21%) | 62 (30%) | |
| IVC | 4 (2%) | 3 (1%) | |
| No VTE | 0 (0%) | 1 (0.5%) | |
| Anticoagulation on discharge | <0.0001 | ||
| Started | 113 (63%) | 82 (40%) | |
| Not started | 53 (30%) | 92 (44%) | |
| Death before discharge | 13 (7%) | 33 (16%) |
N: number. Percentages of the total retrievable and permanent filter populations are indicated in parentheses.