| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 779 |
64.9%
|
| 1 | Only once | 236 |
19.7%
|
| 2 | A few times | 145 |
12.1%
|
| 3 | Often | 39 |
3.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 1 |
0.1%
|