| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 14 |
27.5%
|
| 2 | 6 |
11.8%
|
|
| 4 | 19 |
37.3%
|
|
| 6 | 3 |
5.9%
|
|
| 7 | 1 |
2%
|
|
| 8 | 3 |
5.9%
|
|
| 12 | 3 |
5.9%
|
|
| 14 | 1 |
2%
|
|
| 48 | 1 |
2%
|
|
| Sysmiss | 99 |