| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 493 |
41.1%
|
| 1 | Just once or twice | 270 |
22.5%
|
| 2 | Several times | 204 |
17%
|
| 3 | Many times | 121 |
10.1%
|
| 4 | Always | 110 |
9.2%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 1 |
0.1%
|