| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 575 |
47.9%
|
| 1 | Only once | 91 |
7.6%
|
| 2 | A few times | 254 |
21.2%
|
| 3 | Often | 232 |
19.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 48 |
4%
|