| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 3 |
0%
|
| 0 | Never | 12000 |
47.2%
|
| 1 | Once or twice | 1590 |
6.3%
|
| 2 | A few times | 1489 |
5.9%
|
| 3 | Often | 1341 |
5.3%
|
| 7 | No experience | 8117 |
32%
|
| 9 | Don't know | 857 |
3.4%
|
| 998 | Refused | 0 |
0%
|