| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1722 |
72.9%
|
| 1 | Only once | 236 |
10%
|
| 2 | A few times | 263 |
11.1%
|
| 3 | Often | 138 |
5.8%
|
| 9 | Don't know | 4 |
0.2%
|
| 998 | Refused | 0 |
0%
|