| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
6.5%
|
| 0 | 17 |
18.5%
|
|
| 1 | 12 |
13%
|
|
| 2 | 14 |
15.2%
|
|
| 3 | 10 |
10.9%
|
|
| 4 | 7 |
7.6%
|
|
| 5 | 5 |
5.4%
|
|
| 6 | 3 |
3.3%
|
|
| 7 | 5 |
5.4%
|
|
| 8 | 1 |
1.1%
|
|
| 9 | 1 |
1.1%
|
|
| 10 | 4 |
4.3%
|
|
| 12 | 1 |
1.1%
|
|
| 15 | 2 |
2.2%
|
|
| 22 | 1 |
1.1%
|
|
| 35 | 1 |
1.1%
|
|
| 46 | 1 |
1.1%
|
|
| 80 | 1 |
1.1%
|
|
| Sysmiss | 506 |