| Value | Category | Cases | |
|---|---|---|---|
| 1 | Always | 7592 |
6.2%
|
| 2 | Sometimes | 8065 |
6.6%
|
| 3 | Never | 11191 |
9.2%
|
| 93 | Refused | 73 |
0.1%
|
| 97 | Not applicable | 61038 |
50.2%
|
| 99 | Missing | 33547 |
27.6%
|
| Sysmiss | 73589 |