| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 548 |
45.7%
|
| 1 | Just once or twice | 265 |
22.1%
|
| 2 | Several times | 252 |
21%
|
| 3 | Many times | 91 |
7.6%
|
| 4 | Always | 43 |
3.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|