| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 3 |
0.3%
|
| 0 | Never | 560 |
46.7%
|
| 1 | Only once | 241 |
20.1%
|
| 2 | A few times | 231 |
19.3%
|
| 3 | Often | 158 |
13.2%
|
| 9 | Don't know | 6 |
0.5%
|
| 98 | Refused | 0 |
0%
|