| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. No | 1664 |
67.9%
|
| 1 | 1. Yes | 781 |
31.9%
|
| 7 | 7. Don't know | 4 |
0.2%
|
| 9 | 9. Refuse | 2 |
0.1%
|
| Sysmiss | 2 |