| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 307 |
25.6%
|
| 1 | Just once or twice | 248 |
20.7%
|
| 2 | Several times | 256 |
21.3%
|
| 3 | Many times | 194 |
16.2%
|
| 4 | Always | 191 |
15.9%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 4 |
0.3%
|