| Age group (years) | Number of patients | Percentage |
| 12 - 19 | 62 | 15.3 |
| 20 - 29 | 138 | 34.2 |
| 30 - 39 | 74 | 18.3 |
| 40 - 49 | 43 | 10.6 |
| 50 - 59 | 41 | 10.1 |
| 60 - 69 | 24 | 5.9 |
| ≥70 | 22 | 5.4 |
| Total | 404 | 100 |