| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 794 |
66.2%
|
| 1 | Just once or twice | 142 |
11.8%
|
| 2 | Several times | 107 |
8.9%
|
| 3 | Many times | 59 |
4.9%
|
| 4 | Always | 97 |
8.1%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 0 |
0%
|