| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
1.5%
|
| 1 | 164 |
40.4%
|
|
| 2 | 132 |
32.5%
|
|
| 3 | 43 |
10.6%
|
|
| 4 | 21 |
5.2%
|
|
| 5 | 16 |
3.9%
|
|
| 6 | 8 |
2%
|
|
| 8 | 2 |
0.5%
|
|
| 10 | 2 |
0.5%
|
|
| 12 | 8 |
2%
|
|
| 13 | 1 |
0.2%
|
|
| 15 | 1 |
0.2%
|
|
| 20 | 1 |
0.2%
|
|
| 30 | 1 |
0.2%
|
|
| Sysmiss | 894 |