| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 337 |
14%
|
| 1 | Just once or twice | 362 |
15.1%
|
| 2 | Several times | 751 |
31.3%
|
| 3 | Many times | 606 |
25.3%
|
| 4 | Always | 339 |
14.1%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 5 |
0.2%
|