| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 876 |
36.5%
|
| 1 | Just once or twice | 549 |
22.9%
|
| 2 | Several times | 556 |
23.2%
|
| 3 | Many times | 309 |
12.9%
|
| 4 | Always | 110 |
4.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|