| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 1 |
1%
|
| -9 | Don't know (spontaneous) | 9 |
8.6%
|
| 0 | 46 |
43.8%
|
|
| 1 | 12 |
11.4%
|
|
| 2 | 6 |
5.7%
|
|
| 3 | 5 |
4.8%
|
|
| 4 | 3 |
2.9%
|
|
| 5 | 4 |
3.8%
|
|
| 6 | 2 |
1.9%
|
|
| 7 | 1 |
1%
|
|
| 8 | 3 |
2.9%
|
|
| 9 | 2 |
1.9%
|
|
| 10 | 4 |
3.8%
|
|
| 15 | 3 |
2.9%
|
|
| 21 | 1 |
1%
|
|
| 25 | 1 |
1%
|
|
| 35 | 1 |
1%
|
|
| 40 | 1 |
1%
|
|
| Sysmiss | 255 |