| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 3 |
7.5%
|
| -8 | refusal | 0 |
0%
|
| 1 | yes | 4 |
10%
|
| 2 | no | 33 |
82.5%
|
| Sysmiss | 201 |