| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 793 |
33%
|
| 1 | Just once or twice | 436 |
18.2%
|
| 2 | Several times | 485 |
20.2%
|
| 3 | Many times | 449 |
18.7%
|
| 4 | Always | 237 |
9.9%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't Know | 0 |
0%
|