| Value | Category | Cases | |
|---|---|---|---|
| 1 | Below 30 | 13 |
11.4%
|
| 2 | 30-40 years old | 63 |
55.3%
|
| 3 | 41-50 years old | 19 |
16.7%
|
| 4 | Over 50 years old | 19 |
16.7%
|
| Sysmiss | 390 |