| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 796 |
64.6%
|
| 1 | Only once | 147 |
11.9%
|
| 2 | A few times | 201 |
16.3%
|
| 3 | Often | 78 |
6.3%
|
| 9 | Don't know | 10 |
0.8%
|
| 998 | Refused | 0 |
0%
|