| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 |
12.8%
|
| 0 | 20 |
15%
|
|
| 1 | 11 |
8.3%
|
|
| 2 | 17 |
12.8%
|
|
| 3 | 16 |
12%
|
|
| 4 | 6 |
4.5%
|
|
| 5 | 7 |
5.3%
|
|
| 6 | 5 |
3.8%
|
|
| 7 | 2 |
1.5%
|
|
| 9 | 1 |
0.8%
|
|
| 10 | 8 |
6%
|
|
| 12 | 2 |
1.5%
|
|
| 14 | 1 |
0.8%
|
|
| 17 | 1 |
0.8%
|
|
| 18 | 2 |
1.5%
|
|
| 20 | 2 |
1.5%
|
|
| 22 | 1 |
0.8%
|
|
| 30 | 2 |
1.5%
|
|
| 45 | 1 |
0.8%
|
|
| 47 | 1 |
0.8%
|
|
| 50 | 2 |
1.5%
|
|
| 57 | 1 |
0.8%
|
|
| 60 | 1 |
0.8%
|
|
| 65 | 1 |
0.8%
|
|
| 78 | 1 |
0.8%
|
|
| 150 | 2 |
1.5%
|
|
| 156 | 1 |
0.8%
|
|
| 539 | 1 |
0.8%
|
|
| Sysmiss | 227 |