| Value | Category | Cases | |
|---|---|---|---|
| 1 | Often | 2454 |
3.4%
|
| 2 | Sometimes | 2279 |
3.2%
|
| 3 | Never | 3429 |
4.8%
|
| 8 | Not applicable | 62366 |
87.7%
|
| 9 | Unspecified | 609 |
0.9%
|