| Value | Category | Cases | |
|---|---|---|---|
| -1000 | Doesn’t apply (SPONTANEOUS) | 9 |
1.9%
|
| -9 | Don’t know (SPONTANEOUS) | 2 |
0.4%
|
| 1 | yes | 171 |
36.2%
|
| 2 | no | 291 |
61.5%
|
| Sysmiss | 198 |