| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 572 |
47.5%
|
| 1 | Only once | 100 |
8.3%
|
| 2 | A few times | 236 |
19.6%
|
| 3 | Often | 293 |
24.3%
|
| 8 | Refused | 3 |
0.2%
|
| 9 | Don’t know | 0 |
0%
|