| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1170 |
48.9%
|
| 1 | Just once or twice | 424 |
17.7%
|
| 2 | Several times | 424 |
17.7%
|
| 3 | Many times | 204 |
8.5%
|
| 4 | Always | 149 |
6.2%
|
| 8 | Refused | 4 |
0.2%
|
| 9 | Don't know | 17 |
0.7%
|