| Value | Category | Cases | |
|---|---|---|---|
| -1000 | Does not apply (SPONTANEOUS) | 22 |
4.9%
|
| -9 | Don’t know (SPONTANEOUS) | 3 |
0.7%
|
| 1 | yes | 229 |
51.1%
|
| 2 | No | 194 |
43.3%
|
| Sysmiss | 223 |