| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 181 |
15.1%
|
| 1 | Just once or twice | 174 |
14.5%
|
| 2 | Several times | 380 |
31.7%
|
| 3 | Many times | 295 |
24.6%
|
| 4 | Always | 163 |
13.6%
|
| 8 | Refused | 3 |
0.3%
|
| 9 | Don't know | 4 |
0.3%
|