| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1033 |
86.1%
|
| 1 | Just once or twice | 91 |
7.6%
|
| 2 | Several times | 37 |
3.1%
|
| 3 | Many times | 26 |
2.2%
|
| 4 | Always | 9 |
0.8%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't Know | 3 |
0.3%
|