| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 165 |
95.9%
|
|
| 5 | 1 |
0.6%
|
|
| 10 | 6 |
3.5%
|
|
| Sysmiss | 68 |