| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing | 0 |
0%
|
| -1 | Refusal | 2 |
0.3%
|
| 0 | No | 135 |
20.1%
|
| 1 | Yes | 534 |
79.6%
|
| Sysmiss | 1474 |