| Value | Category | Cases | |
|---|---|---|---|
| -1000 | Doesn’t apply (SPONTANEOUS) | 3 |
0.6%
|
| -9 | Don’t know (SPONTANEOUS) | 2 |
0.4%
|
| 1 | yes | 24 |
5.1%
|
| 2 | no | 444 |
93.9%
|
| Sysmiss | 198 |