| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
10%
|
| -7 | Does not apply (spontaneous) | 1 |
5%
|
| 0 | 2 |
10%
|
|
| 1 | 3 |
15%
|
|
| 2 | No | 5 |
25%
|
| 3 | 5 |
25%
|
|
| 5 | 1 |
5%
|
|
| 9 | Yes | 0 |
0%
|
| 23 | 1 |
5%
|
|
| Sysmiss | 131 |