| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 810 |
67.5%
|
| 1 | Only once | 141 |
11.8%
|
| 2 | A few times | 195 |
16.3%
|
| 3 | Often | 51 |
4.3%
|
| 9 | Don't know | 3 |
0.3%
|
| 98 | Refused | 0 |
0%
|