| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1392 |
87.1%
|
| 1 | Only once | 66 |
4.1%
|
| 2 | A few times | 108 |
6.8%
|
| 3 | Often | 28 |
1.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 5 |
0.3%
|