Demographic and hematologic characteristics at diagnosis of 525 patients with primary myelofibrosis
| Characteristic . | Value . |
|---|---|
| No. of patients | 525 |
| Median follow-up, y (range) | 3.3 (0.6-24) |
| Age younger than 65 y (%) | 262 (49) |
| Male/female | 335/190 |
| White blood cell count greater than 25 × 109/L (%) | 55 (10) |
| Hemoglobin level lower than 10 g/dL (%) | 188 (36) |
| Platelet count lower than 100 × 109/L (%) | 83 (16) |
| Peripheral blast cells 1% or higher (%) | 144 (27) |
| Constitutional symptoms (%) | 144 (27) |
| Splenomegaly (%) | 434 (83) |
| Hepatomegaly (%) | 343 (65) |
| Characteristic . | Value . |
|---|---|
| No. of patients | 525 |
| Median follow-up, y (range) | 3.3 (0.6-24) |
| Age younger than 65 y (%) | 262 (49) |
| Male/female | 335/190 |
| White blood cell count greater than 25 × 109/L (%) | 55 (10) |
| Hemoglobin level lower than 10 g/dL (%) | 188 (36) |
| Platelet count lower than 100 × 109/L (%) | 83 (16) |
| Peripheral blast cells 1% or higher (%) | 144 (27) |
| Constitutional symptoms (%) | 144 (27) |
| Splenomegaly (%) | 434 (83) |
| Hepatomegaly (%) | 343 (65) |