| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 81 |
26.2%
|
| 0 | 82 |
26.5%
|
|
| 1 | 11 |
3.6%
|
|
| 2 | 12 |
3.9%
|
|
| 3 | 10 |
3.2%
|
|
| 4 | 17 |
5.5%
|
|
| 5 | 20 |
6.5%
|
|
| 6 | 8 |
2.6%
|
|
| 7 | 1 |
0.3%
|
|
| 8 | 6 |
1.9%
|
|
| 9 | 1 |
0.3%
|
|
| 10 | 20 |
6.5%
|
|
| 12 | 2 |
0.6%
|
|
| 15 | 6 |
1.9%
|
|
| 16 | 1 |
0.3%
|
|
| 18 | 1 |
0.3%
|
|
| 20 | 10 |
3.2%
|
|
| 25 | 1 |
0.3%
|
|
| 30 | 8 |
2.6%
|
|
| 40 | 3 |
1%
|
|
| 50 | 6 |
1.9%
|
|
| 81 | 1 |
0.3%
|
|
| 200 | 1 |
0.3%
|
|
| Sysmiss | 289 |