| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 107 |
8.2%
|
| -7 | Does not apply (spontaneous) | 67 |
5.1%
|
| 1 | Yes | 137 |
10.5%
|
| 2 | No | 1000 |
76.3%
|
| Sysmiss | 58 |