| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 167 |
7%
|
| 1 | Just once or twice | 338 |
14.1%
|
| 2 | Several times | 604 |
25.2%
|
| 3 | Many times | 789 |
32.9%
|
| 4 | Always | 499 |
20.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't Know | 3 |
0.1%
|