Table 1.
Characteristics of the 60 patients with polycythemia vera and the controls.
| Pts with Thrombosis |
Pts without Thrombosis |
Controls | |
|---|---|---|---|
| 40/60 | 20/60 | 50 | |
| Age, y | 52 (40–55) | 50 (35–52) | 51 (32–52) |
| Men, n | 25 | 12 | 20 |
| Women, n | 15 | 8 | 20 |
| JAK2V617F allele burden | 75 | 25 | |
| Risk factors | |||
| Tobacco use | Absent | Absent | Absent |
| Hypertension | Absent | Absent | Absent |
| Diabetes | Absent | Absent | Absent |
| Dyslipidemia | Absent | Absent | Absent |
| Obesity | Absent | Absent | Absent |
| Hereditary thrombophilia | Absent | Absent | Absent |
| Leukocytosis (>11 × 109/L) | Absent | Absent | Absent |
| TET mutation | Absent | Absent | |
| Comorbidities | |||
| Autoimmune disease | Absent | Absent | Absent |
| Kawasaki disease | Absent | Absent | Absent |
| Henoch–Schönlein | Absent | Absent | Absent |
| Systemic lupus erythematosus | Absent | Absent | Absent |
| Crohn’s disease | Absent | Absent | Absent |
| Rheumatoid arthritis | Absent | Absent | Absent |
| Therapy | |||
| Phlebotomy | 40/60 | 20/60 | |
| Aspirin | 40/60 | 20/60 |