| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 250 |
20.9%
|
| 1 | Just once or twice | 163 |
13.6%
|
| 2 | Several times | 346 |
28.9%
|
| 3 | Many times | 263 |
21.9%
|
| 4 | Always | 175 |
14.6%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 1 |
0.1%
|