| Value | Category | Cases | |
|---|---|---|---|
| -1000 | Does not apply (SPONTANEOUS) | 318 |
71%
|
| -9 | Don’t know (SPONTANEOUS) | 12 |
2.7%
|
| 1 | yes | 32 |
7.1%
|
| 2 | No | 86 |
19.2%
|
| Sysmiss | 223 |