| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 637 |
53.1%
|
| 1 | Only once | 83 |
6.9%
|
| 2 | A few times | 159 |
13.3%
|
| 3 | Often | 320 |
26.7%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 1 |
0.1%
|