| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 720 |
60%
|
| 1 | Only once | 111 |
9.3%
|
| 2 | A few times | 116 |
9.7%
|
| 3 | Often | 176 |
14.7%
|
| 8 | Refused | 3 |
0.3%
|
| 9 | Don’t know | 74 |
6.2%
|