| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 3 |
20%
|
| 0 | 5 |
33.3%
|
|
| 1 | 3 |
20%
|
|
| 3 | 1 |
6.7%
|
|
| 5 | 1 |
6.7%
|
|
| 9 | 1 |
6.7%
|
|
| 10 | 1 |
6.7%
|
|
| Sysmiss | 226 |