| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.2%
|
| -8 | Refusal (spontaneous) | 2 |
0.5%
|
| -7 | Does not apply | 73 |
18.2%
|
| 1 | Yes | 5 |
1.2%
|
| 2 | No | 321 |
79.9%
|
| Sysmiss | 1667 |