| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 938 |
39.1%
|
| 1 | Only once | 256 |
10.7%
|
| 2 | A few times | 577 |
24%
|
| 3 | Often | 623 |
26%
|
| 9 | Don't know | 6 |
0.3%
|
| 98 | Refused | 0 |
0%
|