| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 801 |
33.4%
|
| 1 | Only once | 222 |
9.3%
|
| 2 | A few times | 734 |
30.6%
|
| 3 | Often | 641 |
26.7%
|
| 9 | Don't know | 2 |
0.1%
|
| 98 | Refused | 0 |
0%
|