| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 25 |
58.1%
|
| 0 | None | 8 |
18.6%
|
| 1 | 2 |
4.7%
|
|
| 2 | 1 |
2.3%
|
|
| 3 | 1 |
2.3%
|
|
| 5 | 3 |
7%
|
|
| 10 | 2 |
4.7%
|
|
| 20 | 1 |
2.3%
|
|
| Sysmiss | 77 |