| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 126 |
16.3%
|
| 1 | Yes | 640 |
82.6%
|
| 8 | Don't know | 3 |
0.4%
|
| 9 | 6 |
0.8%
|
|
| Sysmiss | 308 |