Table 2.
Risk Scoring System of cancer-associated thrombosis criteria for assessing venous thromboembolism in patients with cancer
| Risk factor | Point | Present patient | |
| Age and sex | |||
| 40 to 80-year-old female | 1 | ||
| > 80 years old | −1 | ||
| Prior history of VTE | 3 | ||
| Cancer subtypes | |||
| Low VTE propensity | |||
| Head and neck, endocrine | −2 | −2 | |
| Esophagus, breast | −1 | ||
| High VTE propensity | |||
| Lung, gynecologic, sarcoma, metastasis unknown origin | 1 | ||
| Myeloma, prostate | 2 | ||
| Intermediate VTE propensity | |||
| Other cancer subtypes | 0 | 0 | |
| Risk category | Score (Total points) | Incidence of VTE | |
| High risk | 3– | 8.7% | |
| Intermediate risk | 1–2 | 1.5% | |
| Low risk | =0 | 0.9% | |
| Very low risk | −4 to −1 | 0.5% | −2 |
VTE venous thromboembolism