| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1.1%
|
| 0 | 26 |
27.7%
|
|
| 1 | 17 |
18.1%
|
|
| 2 | 19 |
20.2%
|
|
| 3 | 6 |
6.4%
|
|
| 4 | 7 |
7.4%
|
|
| 5 | 3 |
3.2%
|
|
| 6 | 2 |
2.1%
|
|
| 8 | 4 |
4.3%
|
|
| 9 | 1 |
1.1%
|
|
| 10 | 2 |
2.1%
|
|
| 12 | 2 |
2.1%
|
|
| 15 | 2 |
2.1%
|
|
| 20 | 2 |
2.1%
|
|
| Sysmiss | 504 |