Definition, frequency, and survival of the risk groups of the prognostic scoring system of primary myelofibrosis
| Risk group . | No. of factors . | Proportion of patients, % . | Median survival (mo; 95% CI) . | Proportion of deaths, % . |
|---|---|---|---|---|
| Low | 0 | 22 | 135 (117-181) | 32 |
| Intermediate-1 | 1 | 29 | 95 (79-114) | 50 |
| Intermediate-2 | 2 | 28 | 48 (43-59) | 71 |
| High | > 3 | 21 | 27 (23-31) | 73 |
| Risk group . | No. of factors . | Proportion of patients, % . | Median survival (mo; 95% CI) . | Proportion of deaths, % . |
|---|---|---|---|---|
| Low | 0 | 22 | 135 (117-181) | 32 |
| Intermediate-1 | 1 | 29 | 95 (79-114) | 50 |
| Intermediate-2 | 2 | 28 | 48 (43-59) | 71 |
| High | > 3 | 21 | 27 (23-31) | 73 |