| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 38202 |
83.4%
|
| 1 | Only once | 2838 |
6.2%
|
| 2 | A few times | 2937 |
6.4%
|
| 3 | Often | 1391 |
3%
|
| 8 | Refused | 81 |
0.2%
|
| 9 | Don’t know | 374 |
0.8%
|