| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 36 |
1.4%
|
| 1 | Kindergarten 1 | 2 |
0.1%
|
| 4 | Primary 2 | 1 |
0%
|
| 5 | Primary 3 | 3 |
0.1%
|
| 7 | Primary 5 | 3 |
0.1%
|
| 9 | Primary 7 | 1 |
0%
|
| 99 | Refused | 1 |
0%
|
| Sysmiss | 2472 |
98.1%
|