| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 0 |
0%
|
| 2 | Basic | 1 |
16.7%
|
| 3 | Intermediate | 3 |
50%
|
| 4 | Proficient | 2 |
33.3%
|
| Sysmiss | 531 |