| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1723 |
72.9%
|
| 1 | Only once | 237 |
10%
|
| 2 | A few times | 277 |
11.7%
|
| 3 | Often | 107 |
4.5%
|
| 9 | Don't know | 19 |
0.8%
|
| 998 | Refused | 0 |
0%
|