| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 632 |
60.3%
|
| 1 | Once or twice | 64 |
6.1%
|
| 2 | A few times | 40 |
3.8%
|
| 3 | Often | 46 |
4.4%
|
| 7 | No experience | 255 |
24.3%
|
| 9 | Don't know | 11 |
1%
|