| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 26 |
18.6%
|
| 0 | 50 |
35.7%
|
|
| 1 | 9 |
6.4%
|
|
| 2 | 17 |
12.1%
|
|
| 3 | 7 |
5%
|
|
| 4 | 3 |
2.1%
|
|
| 5 | 5 |
3.6%
|
|
| 6 | 1 |
0.7%
|
|
| 8 | 1 |
0.7%
|
|
| 10 | 4 |
2.9%
|
|
| 12 | 1 |
0.7%
|
|
| 14 | 1 |
0.7%
|
|
| 15 | 1 |
0.7%
|
|
| 18 | 1 |
0.7%
|
|
| 20 | 3 |
2.1%
|
|
| 25 | 2 |
1.4%
|
|
| 30 | 2 |
1.4%
|
|
| 40 | 2 |
1.4%
|
|
| 60 | 1 |
0.7%
|
|
| 80 | 2 |
1.4%
|
|
| 91 | 1 |
0.7%
|
|
| Sysmiss | 1229 |