| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
11.8%
|
| 0 | None | 24 |
47.1%
|
| 1 | 2 |
3.9%
|
|
| 2 | 2 |
3.9%
|
|
| 5 | 2 |
3.9%
|
|
| 10 | 3 |
5.9%
|
|
| 15 | 2 |
3.9%
|
|
| 20 | 3 |
5.9%
|
|
| 30 | 1 |
2%
|
|
| 35 | 1 |
2%
|
|
| 40 | 1 |
2%
|
|
| 45 | 1 |
2%
|
|
| 50 | 1 |
2%
|
|
| 60 | 1 |
2%
|
|
| 80 | 1 |
2%
|
|
| Sysmiss | 256 |