| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1741 |
72.5%
|
| 1 | Only once | 157 |
6.5%
|
| 2 | A few times | 271 |
11.3%
|
| 3 | Often | 226 |
9.4%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 5 |
0.2%
|