| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 18 |
35.3%
|
| 0 | 1 |
2%
|
|
| 8 | 1 |
2%
|
|
| 25 | 1 |
2%
|
|
| 30 | 2 |
3.9%
|
|
| 35 | 1 |
2%
|
|
| 48 | 1 |
2%
|
|
| 50 | 3 |
5.9%
|
|
| 60 | 1 |
2%
|
|
| 75 | 1 |
2%
|
|
| 80 | 1 |
2%
|
|
| 90 | 1 |
2%
|
|
| 100 | 19 |
37.3%
|
|
| Sysmiss | 99 |