| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 809 |
67.5%
|
| 1 | Only once | 80 |
6.7%
|
| 2 | A few times | 113 |
9.4%
|
| 3 | Often | 186 |
15.5%
|
| 9 | Don't know | 10 |
0.8%
|
| 98 | Refused | 0 |
0%
|