| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 355 |
29.6%
|
| 1 | Just once or twice | 109 |
9.1%
|
| 2 | Several times | 382 |
31.8%
|
| 3 | Many times | 312 |
26%
|
| 4 | Always | 37 |
3.1%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 5 |
0.4%
|