| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. yes | 4144 |
91.3%
|
| 2 | 2. no | 0 |
0%
|
| 3 | 3. absent | 301 |
6.6%
|
| 4 | 4. withdrawn | 91 |
2%
|
| 5 | 5. grade r | 1 |
0%
|
| 99 | 99. missing | 0 |
0%
|
| Sysmiss | 1 |