| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1434 |
59.8%
|
| 1 | Just once or twice | 290 |
12.1%
|
| 2 | Several times | 437 |
18.2%
|
| 3 | Many times | 229 |
9.5%
|
| 4 | Always | 8 |
0.3%
|
| 8 | Refused | 1 |
0%
|
| 9 | Don't know | 1 |
0%
|