| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 629 |
52.4%
|
| 1 | Just once or twice | 205 |
17.1%
|
| 2 | Several times | 209 |
17.4%
|
| 3 | Many times | 107 |
8.9%
|
| 4 | Always | 46 |
3.8%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 3 |
0.3%
|