| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply (spontaneous) | 2 |
22.2%
|
| 1 | Yes | 0 |
0%
|
| 2 | No | 7 |
77.8%
|
| Sysmiss | 140 |