| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 875 |
36.5%
|
| 1 | Just once or twice | 446 |
18.6%
|
| 2 | Several times | 515 |
21.5%
|
| 3 | Many times | 320 |
13.3%
|
| 4 | Always | 238 |
9.9%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 6 |
0.3%
|