| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 38 |
16.5%
|
| 0 | 54 |
23.4%
|
|
| 1 | 23 |
10%
|
|
| 2 | 22 |
9.5%
|
|
| 3 | 19 |
8.2%
|
|
| 4 | 14 |
6.1%
|
|
| 5 | 13 |
5.6%
|
|
| 6 | 9 |
3.9%
|
|
| 7 | 4 |
1.7%
|
|
| 8 | 8 |
3.5%
|
|
| 9 | 1 |
0.4%
|
|
| 10 | 14 |
6.1%
|
|
| 12 | 5 |
2.2%
|
|
| 15 | 1 |
0.4%
|
|
| 17 | 1 |
0.4%
|
|
| 20 | 3 |
1.3%
|
|
| 47 | 1 |
0.4%
|
|
| 60 | 1 |
0.4%
|
|
| Sysmiss | 482 |