| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2189 |
91.2%
|
| 1 | Only once | 101 |
4.2%
|
| 2 | A few times | 73 |
3%
|
| 3 | Often | 34 |
1.4%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 3 |
0.1%
|