| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 339 |
28.3%
|
| 1 | Just once or twice | 201 |
16.8%
|
| 2 | Several times | 362 |
30.2%
|
| 3 | Many times | 234 |
19.5%
|
| 4 | Always | 62 |
5.2%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|