| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 32 |
5.9%
|
| 0 | 1 |
0.2%
|
|
| 1 | 49 |
9%
|
|
| 2 | 109 |
19.9%
|
|
| 3 | 89 |
16.3%
|
|
| 4 | 45 |
8.2%
|
|
| 5 | 70 |
12.8%
|
|
| 6 | 39 |
7.1%
|
|
| 7 | 18 |
3.3%
|
|
| 8 | 21 |
3.8%
|
|
| 9 | 3 |
0.5%
|
|
| 10 | 41 |
7.5%
|
|
| 12 | 1 |
0.2%
|
|
| 13 | 1 |
0.2%
|
|
| 14 | 2 |
0.4%
|
|
| 15 | 13 |
2.4%
|
|
| 20 | 4 |
0.7%
|
|
| 21 | 1 |
0.2%
|
|
| 24 | 1 |
0.2%
|
|
| 25 | 3 |
0.5%
|
|
| 28 | 1 |
0.2%
|
|
| 30 | 2 |
0.4%
|
|
| 420 | 1 |
0.2%
|
|
| Sysmiss | 102 |