| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 783 |
48.9%
|
| 1 | Just once or twice | 385 |
24.1%
|
| 2 | Several times | 290 |
18.1%
|
| 3 | Many times | 117 |
7.3%
|
| 4 | Always | 25 |
1.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|