Table 2.
Time-to-VTE after cancer diagnosis among all cancer patients
| VTE algorithm 1#(N = 1,388) | VTE algorithm 2&(N = 473) | |||
|---|---|---|---|---|
| Time-to-VTE | Patient no. (%) | Cumulative rate of VTE (%) | Patient no. (%) | Cumulative rate of VTE (%) |
| 0 days | 497 (35.8) | 35.8 | 85 (18.0) | 18.0 |
| 1 – 30 days | 98 (7.1) | 42.9 | 34 (7.2) | 25.2 |
| 31 – 90 days | 147 (10.6) | 53.5 | 69 (14.6) | 39.8 |
| 91 – 180 days | 115 (8.3) | 61.8 | 38 (8.0) | 47.8 |
| 181 – 270 days | 63 (4.5) | 66.3 | 29 (6.1) | 53.9 |
| 271 – 365 days | 62 (4.5) | 70.8 | 26 (5.5) | 59.4 |
| 366 – 545 days | 70 (5.0) | 75.8 | 32 (6.8) | 66.2 |
| 546 – 761 days | 75 (5.4) | 81.2 | 33 (7.0) | 73.2 |
| >731 days* | 261 (18.8) | 100.0 | 127 (26.9) | 100.0 |
*The last observed events occurred 3,124 days after index date.
#VTE algorithm 1 was defined as a hospital admission with diagnostic codes of VTE (ICD-9-CM codes 415.1x, 451.xx, 452, and 453.xx).
&VTE algorithm 2 was based on both the hospital admission with diagnostic codes of VTE and managements of VTE (prescription of intravenous or subcutaneous (IV/SC) anticoagulants (unfractionated heparin (UFH) or low-molecular-weight heparin (LMWH)) or reimbursement codes of surgical thromboectomy) during the hospital stay.