| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
3.6%
|
| 0 | 109 |
56.5%
|
|
| 5 | 1 |
0.5%
|
|
| 8 | 1 |
0.5%
|
|
| 10 | 8 |
4.1%
|
|
| 15 | 2 |
1%
|
|
| 20 | 13 |
6.7%
|
|
| 23 | 1 |
0.5%
|
|
| 25 | 1 |
0.5%
|
|
| 30 | 12 |
6.2%
|
|
| 40 | 6 |
3.1%
|
|
| 50 | 16 |
8.3%
|
|
| 60 | 3 |
1.6%
|
|
| 70 | 3 |
1.6%
|
|
| 80 | 1 |
0.5%
|
|
| 90 | 2 |
1%
|
|
| 100 | 7 |
3.6%
|
|
| Sysmiss | 167 |