Demographic data of the patients aged <40 at diagnosis
| Demographic data | Number | Percentage |
|---|---|---|
| Patients | 18 | |
| Men | 9 | 50 |
| Women | 9 | 50 |
| Age at diagnosis (years) | ||
| 18 | 1 | 6 |
| 26 | 1 | 6 |
| 32 | 1 | 6 |
| 35 | 2 | 11 |
| 36 | 4 | 22 |
| 37 | 2 | 11 |
| 38 | 2 | 11 |
| 39 | 2 | 11 |
| 40 | 3 | 17 |
| Normal alkaline phosphatases | 4 | 22 |
| Raised alkaline phosphatases | 14 | 78 |
| Median (SD) | Limits | |
| Age at diagnosis (years) | 35.4 (5.5) | 18–40 |
| Years of monitoring | 3.1 (2.5) | 0.5–9 |