| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 765 |
63.9%
|
| 1 | Just once or twice | 237 |
19.8%
|
| 2 | Several times | 142 |
11.9%
|
| 3 | Many times | 39 |
3.3%
|
| 4 | Always | 14 |
1.2%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|