| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 240 |
22.9%
|
| 1 | Once or twice | 222 |
21.2%
|
| 2 | A few times | 174 |
16.6%
|
| 3 | Often | 125 |
11.9%
|
| 7 | No experience | 254 |
24.2%
|
| 9 | Don't know | 33 |
3.1%
|