| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 4 |
0%
|
| 0 | Never | 9323 |
36.7%
|
| 1 | Once or twice | 3788 |
14.9%
|
| 2 | A few times | 4025 |
15.8%
|
| 3 | Often | 3420 |
13.5%
|
| 7 | No experience | 4345 |
17.1%
|
| 9 | Don't know | 492 |
1.9%
|
| 998 | Refused | 0 |
0%
|