| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 800 |
50.6%
|
| 1 | Just once or twice | 260 |
16.5%
|
| 2 | Several times | 236 |
14.9%
|
| 3 | Many times | 173 |
10.9%
|
| 4 | Always | 101 |
6.4%
|
| 8 | Refused | 2 |
0.1%
|
| 9 | Don't Know | 8 |
0.5%
|