| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 1 |
0.7%
|
| -8 | refusal | 0 |
0%
|
| 1 | yes | 7 |
4.8%
|
| 2 | no | 138 |
94.5%
|
| Sysmiss | 95 |