| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
5.6%
|
| 0 | 2 |
2.8%
|
|
| 10 | 1 |
1.4%
|
|
| 12 | 1 |
1.4%
|
|
| 13 | 1 |
1.4%
|
|
| 20 | 2 |
2.8%
|
|
| 30 | 4 |
5.6%
|
|
| 40 | 2 |
2.8%
|
|
| 50 | 5 |
7%
|
|
| 60 | 6 |
8.5%
|
|
| 70 | 5 |
7%
|
|
| 80 | 7 |
9.9%
|
|
| 83 | 1 |
1.4%
|
|
| 85 | 1 |
1.4%
|
|
| 90 | 5 |
7%
|
|
| 95 | 1 |
1.4%
|
|
| 96 | 1 |
1.4%
|
|
| 98 | 1 |
1.4%
|
|
| 100 | 21 |
29.6%
|
|
| Sysmiss | 297 |