| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1731 |
72.8%
|
| 1 | Just once or twice | 284 |
11.9%
|
| 2 | Several times | 158 |
6.6%
|
| 3 | Many times | 154 |
6.5%
|
| 4 | Always | 50 |
2.1%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0%
|