| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 1 |
1%
|
| 20 | 1 |
1%
|
|
| 40 | 2 |
2%
|
|
| 50 | 3 |
3%
|
|
| 55 | 7 |
6.9%
|
|
| 60 | 7 |
6.9%
|
|
| 65 | 8 |
7.9%
|
|
| 70 | 8 |
7.9%
|
|
| 75 | 3 |
3%
|
|
| 80 | 10 |
9.9%
|
|
| 90 | 2 |
2%
|
|
| 100 | 49 |
48.5%
|
|
| Sysmiss | 52 |