| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1493 |
62.2%
|
| 1 | Only once | 225 |
9.4%
|
| 2 | A few times | 322 |
13.4%
|
| 3 | Often | 225 |
9.4%
|
| 9 | Don't know | 135 |
5.6%
|
| 98 | Refused | 0 |
0%
|