| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
5.4%
|
| 0 | 4 |
2.2%
|
|
| 1 | 2 |
1.1%
|
|
| 2 | 13 |
7.1%
|
|
| 3 | 26 |
14.1%
|
|
| 4 | 5 |
2.7%
|
|
| 5 | 34 |
18.5%
|
|
| 6 | 8 |
4.3%
|
|
| 7 | 18 |
9.8%
|
|
| 8 | 14 |
7.6%
|
|
| 9 | 8 |
4.3%
|
|
| 10 | 20 |
10.9%
|
|
| 12 | 2 |
1.1%
|
|
| 13 | 1 |
0.5%
|
|
| 14 | 1 |
0.5%
|
|
| 15 | 7 |
3.8%
|
|
| 16 | 1 |
0.5%
|
|
| 20 | 4 |
2.2%
|
|
| 24 | 1 |
0.5%
|
|
| 25 | 3 |
1.6%
|
|
| 30 | 2 |
1.1%
|
|
| Sysmiss | 431 |