| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
5.5%
|
| 1 | 5 |
4.5%
|
|
| 2 | 1 |
0.9%
|
|
| 3 | 1 |
0.9%
|
|
| 4 | 1 |
0.9%
|
|
| 5 | 2 |
1.8%
|
|
| 6 | 1 |
0.9%
|
|
| 10 | 2 |
1.8%
|
|
| 13 | 1 |
0.9%
|
|
| 15 | 2 |
1.8%
|
|
| 20 | 3 |
2.7%
|
|
| 25 | 5 |
4.5%
|
|
| 28 | 1 |
0.9%
|
|
| 30 | 1 |
0.9%
|
|
| 33 | 2 |
1.8%
|
|
| 40 | 4 |
3.6%
|
|
| 50 | 11 |
10%
|
|
| 51 | 1 |
0.9%
|
|
| 60 | 1 |
0.9%
|
|
| 66 | 1 |
0.9%
|
|
| 80 | 1 |
0.9%
|
|
| 85 | 1 |
0.9%
|
|
| 90 | 1 |
0.9%
|
|
| 100 | 55 |
50%
|
|
| Sysmiss | 250 |