| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 20 |
48.8%
|
| 0 | 8 |
19.5%
|
|
| 1 | 4 |
9.8%
|
|
| 2 | 1 |
2.4%
|
|
| 3 | 4 |
9.8%
|
|
| 4 | 2 |
4.9%
|
|
| 5 | 1 |
2.4%
|
|
| 7 | 1 |
2.4%
|
|
| Sysmiss | 318 |