| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
10%
|
| 0 | 9 |
45%
|
|
| 1 | 1 |
5%
|
|
| 2 | 2 |
10%
|
|
| 5 | 3 |
15%
|
|
| 6 | 1 |
5%
|
|
| 11 | 1 |
5%
|
|
| 123 | 1 |
5%
|
|
| Sysmiss | 83 |