| Value | Category | Cases | |
|---|---|---|---|
| -9 | -9. Don't know | 2 |
10%
|
| -8 | -8. Refuse | 0 |
0%
|
| -5 | -5. Zero | 0 |
0%
|
| 1 | 3 |
15%
|
|
| 2 | 2 |
10%
|
|
| 3 | 3 |
15%
|
|
| 5 | 2 |
10%
|
|
| 6 | 1 |
5%
|
|
| 12 | 6 |
30%
|
|
| 15 | 1 |
5%
|
|
| Sysmiss | 979 |