| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
7.4%
|
| 15 | 4 |
14.8%
|
|
| 20 | 1 |
3.7%
|
|
| 21 | 1 |
3.7%
|
|
| 27 | 1 |
3.7%
|
|
| 28 | 1 |
3.7%
|
|
| 30 | 5 |
18.5%
|
|
| 50 | 1 |
3.7%
|
|
| 60 | 2 |
7.4%
|
|
| 90 | 5 |
18.5%
|
|
| 180 | 2 |
7.4%
|
|
| 360 | 1 |
3.7%
|
|
| 365 | 1 |
3.7%
|
|
| Sysmiss | 403 |