| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 0 |
0%
|
| -8 | refusal | 0 |
0%
|
| 1 | yes | 1 |
1.8%
|
| 2 | no | 56 |
98.2%
|
| Sysmiss | 91 |