| Value | Category | Cases | |
|---|---|---|---|
| -1000 | Does not apply (SPONTANEOUS) | 42 |
9.4%
|
| -9 | Don’t know (SPONTANEOUS) | 3 |
0.7%
|
| 1 | yes | 214 |
47.8%
|
| 2 | No | 189 |
42.2%
|
| Sysmiss | 223 |