| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 687 |
28.6%
|
| 1 | Only once | 285 |
11.9%
|
| 2 | A few times | 779 |
32.5%
|
| 3 | Often | 648 |
27%
|
| 9 | Don't know | 1 |
0%
|
| 98 | Refused | 0 |
0%
|