| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 804 |
67%
|
| 1 | Only once | 41 |
3.4%
|
| 2 | A few times | 192 |
16%
|
| 3 | Often | 160 |
13.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 3 |
0.3%
|