| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 768 |
48.6%
|
| 1 | Just once or twice | 333 |
21.1%
|
| 2 | Several times | 253 |
16%
|
| 3 | Many times | 164 |
10.4%
|
| 4 | Always | 60 |
3.8%
|
| 8 | Refused | 2 |
0.1%
|
| 9 | Don't Know | 0 |
0%
|