| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
9.1%
|
| 1 | 4 |
7.3%
|
|
| 2 | 7 |
12.7%
|
|
| 5 | 8 |
14.5%
|
|
| 9 | 1 |
1.8%
|
|
| 10 | 5 |
9.1%
|
|
| 15 | 3 |
5.5%
|
|
| 18 | 1 |
1.8%
|
|
| 20 | 5 |
9.1%
|
|
| 25 | 4 |
7.3%
|
|
| 28 | 1 |
1.8%
|
|
| 30 | 7 |
12.7%
|
|
| 40 | 1 |
1.8%
|
|
| 45 | 1 |
1.8%
|
|
| 50 | 1 |
1.8%
|
|
| 75 | 1 |
1.8%
|
|
| Sysmiss | 96 |