| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
11.6%
|
| 0 | 5 |
7.2%
|
|
| 1 | 9 |
13%
|
|
| 2 | 3 |
4.3%
|
|
| 4 | 1 |
1.4%
|
|
| 5 | 3 |
4.3%
|
|
| 8 | 1 |
1.4%
|
|
| 10 | 3 |
4.3%
|
|
| 15 | 3 |
4.3%
|
|
| 19 | 1 |
1.4%
|
|
| 20 | 4 |
5.8%
|
|
| 21 | 2 |
2.9%
|
|
| 22 | 2 |
2.9%
|
|
| 23 | 2 |
2.9%
|
|
| 24 | 1 |
1.4%
|
|
| 25 | 5 |
7.2%
|
|
| 27 | 2 |
2.9%
|
|
| 28 | 1 |
1.4%
|
|
| 30 | 6 |
8.7%
|
|
| 32 | 1 |
1.4%
|
|
| 35 | 4 |
5.8%
|
|
| 39 | 1 |
1.4%
|
|
| 40 | 1 |
1.4%
|
|
| Sysmiss | 83 |