| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 1 |
0.1%
|
| -7 | Not applicable | 3 |
0.3%
|
| 1 | Yes | 664 |
66.3%
|
| 2 | No | 334 |
33.3%
|
| Sysmiss | 1633 |