| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 33 |
10.3%
|
| 0 | 23 |
7.2%
|
|
| 1 | 86 |
27%
|
|
| 2 | 28 |
8.8%
|
|
| 3 | 11 |
3.4%
|
|
| 4 | 5 |
1.6%
|
|
| 5 | 29 |
9.1%
|
|
| 7 | 1 |
0.3%
|
|
| 8 | 1 |
0.3%
|
|
| 10 | 40 |
12.5%
|
|
| 15 | 7 |
2.2%
|
|
| 20 | 19 |
6%
|
|
| 25 | 6 |
1.9%
|
|
| 30 | 10 |
3.1%
|
|
| 35 | 1 |
0.3%
|
|
| 40 | 3 |
0.9%
|
|
| 50 | 6 |
1.9%
|
|
| 60 | 1 |
0.3%
|
|
| 80 | 1 |
0.3%
|
|
| 100 | 8 |
2.5%
|
|
| Sysmiss | 1097 |