| Value | Category | Cases | |
|---|---|---|---|
| 1 | Often | 4163 |
5.9%
|
| 2 | Sometimes | 2225 |
3.1%
|
| 3 | Never | 1790 |
2.5%
|
| 8 | Not applicable | 62366 |
87.7%
|
| 9 | Unspecified | 593 |
0.8%
|