| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. higher grade | 27 |
56.3%
|
| 2 | 2. standard grade | 16 |
33.3%
|
| 3 | 3. lower grade | 0 |
0%
|
| 7 | 7. did not take | 5 |
10.4%
|
| 99 | 99. don't know | 0 |
0%
|
| Sysmiss | 51 |