| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1043 |
86.9%
|
| 1 | Just once or twice | 82 |
6.8%
|
| 2 | Several times | 51 |
4.3%
|
| 3 | Many times | 14 |
1.2%
|
| 4 | Always | 9 |
0.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|