| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 898 |
37.8%
|
| 1 | Just once or twice | 365 |
15.3%
|
| 2 | Several times | 345 |
14.5%
|
| 3 | Many times | 497 |
20.9%
|
| 4 | Always | 272 |
11.4%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0%
|