| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2173 |
90.5%
|
| 1 | Only once | 103 |
4.3%
|
| 2 | A few times | 96 |
4%
|
| 3 | Often | 27 |
1.1%
|
| 9 | Don't know | 1 |
0%
|
| 98 | Refused | 0 |
0%
|