| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
5%
|
| 2 | 1 |
1.7%
|
|
| 3 | 1 |
1.7%
|
|
| 6 | 1 |
1.7%
|
|
| 7 | 3 |
5%
|
|
| 8 | 1 |
1.7%
|
|
| 10 | 1 |
1.7%
|
|
| 12 | 1 |
1.7%
|
|
| 14 | 2 |
3.3%
|
|
| 15 | 10 |
16.7%
|
|
| 18 | 1 |
1.7%
|
|
| 20 | 2 |
3.3%
|
|
| 21 | 1 |
1.7%
|
|
| 22 | 1 |
1.7%
|
|
| 24 | 5 |
8.3%
|
|
| 25 | 2 |
3.3%
|
|
| 30 | 11 |
18.3%
|
|
| 35 | 1 |
1.7%
|
|
| 45 | 1 |
1.7%
|
|
| 60 | 11 |
18.3%
|
|
| Sysmiss | 938 |