| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 815 |
67.9%
|
| 1 | Only once | 170 |
14.2%
|
| 2 | A few times | 167 |
13.9%
|
| 3 | Often | 47 |
3.9%
|
| 9 | Don't know | 1 |
0.1%
|
| 98 | Refused | 0 |
0%
|