| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 2 |
1.9%
|
| 15 | 1 |
1%
|
|
| 25 | 1 |
1%
|
|
| 50 | 1 |
1%
|
|
| 60 | 3 |
2.9%
|
|
| 70 | 1 |
1%
|
|
| 80 | 4 |
3.9%
|
|
| 85 | 1 |
1%
|
|
| 95 | 2 |
1.9%
|
|
| 100 | 87 |
84.5%
|
|
| Sysmiss | 47 |