| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 13 |
50%
|
| 0 | 2 |
7.7%
|
|
| 500 | 1 |
3.8%
|
|
| 600 | 1 |
3.8%
|
|
| 1000 | 2 |
7.7%
|
|
| 2000 | 2 |
7.7%
|
|
| 2500 | 1 |
3.8%
|
|
| 2800 | 3 |
11.5%
|
|
| 15000 | 1 |
3.8%
|
|
| Sysmiss | 124 |