| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
3.8%
|
| 0 | None | 107 |
50.5%
|
| 1 | 3 |
1.4%
|
|
| 2 | 9 |
4.2%
|
|
| 3 | 4 |
1.9%
|
|
| 4 | 2 |
0.9%
|
|
| 5 | 15 |
7.1%
|
|
| 6 | 4 |
1.9%
|
|
| 8 | 5 |
2.4%
|
|
| 9 | 1 |
0.5%
|
|
| 10 | 18 |
8.5%
|
|
| 15 | 14 |
6.6%
|
|
| 20 | 9 |
4.2%
|
|
| 25 | 3 |
1.4%
|
|
| 30 | 3 |
1.4%
|
|
| 40 | 1 |
0.5%
|
|
| 50 | 1 |
0.5%
|
|
| 60 | 2 |
0.9%
|
|
| 70 | 1 |
0.5%
|
|
| 80 | 2 |
0.9%
|
|
| Sysmiss | 218 |