| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 2 |
0%
|
| 0 | Never | 9474 |
37.3%
|
| 1 | Once or twice | 2969 |
11.7%
|
| 2 | A few times | 2369 |
9.3%
|
| 3 | Often | 2410 |
9.5%
|
| 7 | No experience | 7913 |
31.2%
|
| 9 | Don't know | 260 |
1%
|
| 998 | Refused | 0 |
0%
|