| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 10 |
0%
|
| 0 | Never | 14659 |
57.7%
|
| 1 | Once or twice | 1911 |
7.5%
|
| 2 | A few times | 1922 |
7.6%
|
| 3 | Often | 1785 |
7%
|
| 7 | No experience | 4347 |
17.1%
|
| 9 | Don't know | 763 |
3%
|
| 998 | Refused | 0 |
0%
|