| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 400 | 1 |
20%
|
|
| 450 | 1 |
20%
|
|
| 480 | 1 |
20%
|
|
| 500 | 1 |
20%
|
|
| 5200 | 1 |
20%
|
|
| Sysmiss | 151 |