| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1322 |
55.1%
|
| 1 | Just once or twice | 412 |
17.2%
|
| 2 | Several times | 371 |
15.5%
|
| 3 | Many times | 196 |
8.2%
|
| 4 | Always | 95 |
4%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don’t know | 4 |
0.2%
|