| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
8.7%
|
| 0 | 29 |
28.2%
|
|
| 1 | 14 |
13.6%
|
|
| 2 | 7 |
6.8%
|
|
| 3 | 3 |
2.9%
|
|
| 4 | 3 |
2.9%
|
|
| 5 | 4 |
3.9%
|
|
| 6 | 3 |
2.9%
|
|
| 7 | 2 |
1.9%
|
|
| 8 | 5 |
4.9%
|
|
| 9 | 2 |
1.9%
|
|
| 10 | 4 |
3.9%
|
|
| 11 | 1 |
1%
|
|
| 12 | 1 |
1%
|
|
| 15 | 1 |
1%
|
|
| 18 | 2 |
1.9%
|
|
| 20 | 4 |
3.9%
|
|
| 25 | 1 |
1%
|
|
| 30 | 2 |
1.9%
|
|
| 31 | 1 |
1%
|
|
| 38 | 1 |
1%
|
|
| 40 | 2 |
1.9%
|
|
| 50 | 1 |
1%
|
|
| 180 | 1 |
1%
|
|
| Sysmiss | 258 |