| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 26 |
6.5%
|
| 0 | 15 |
3.8%
|
|
| 4 | 1 |
0.3%
|
|
| 9 | 1 |
0.3%
|
|
| 10 | 10 |
2.5%
|
|
| 20 | 24 |
6%
|
|
| 25 | 5 |
1.3%
|
|
| 30 | 14 |
3.5%
|
|
| 35 | 2 |
0.5%
|
|
| 40 | 20 |
5%
|
|
| 45 | 2 |
0.5%
|
|
| 50 | 26 |
6.5%
|
|
| 55 | 1 |
0.3%
|
|
| 60 | 21 |
5.3%
|
|
| 70 | 18 |
4.5%
|
|
| 75 | 2 |
0.5%
|
|
| 80 | 21 |
5.3%
|
|
| 90 | 6 |
1.5%
|
|
| 100 | 183 |
46%
|
|
| Sysmiss | 1327 |