| Value | Category | Cases | |
|---|---|---|---|
| 1 | Younger than 3 years old | 30 |
50.8%
|
| 2 | 3 to 5 years old | 10 |
16.9%
|
| 3 | 6 to 7 years old | 10 |
16.9%
|
| 4 | 8 years old or older | 9 |
15.3%
|
| Sysmiss | 941 |