| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 1976 |
27.4%
|
| 1 | Yes | 4420 |
61.3%
|
| 2 | Can't remember | 7 |
0.1%
|
| 7 | Not applicable | 0 |
0%
|
| 8 | Unknown | 806 |
11.2%
|
| 9 | Missing | 24 | |
| Sysmiss | 9897 |