| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 478 |
39.8%
|
| 1 | Just once or twice | 274 |
22.8%
|
| 2 | Several times | 227 |
18.9%
|
| 3 | Many times | 144 |
12%
|
| 4 | Always | 61 |
5.1%
|
| 8 | Refused | 2 |
0.2%
|
| 9 | Don't know | 14 |
1.2%
|