| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 1158 |
48.3%
|
| 1 | Just once or twice | 458 |
19.1%
|
| 2 | Several times | 433 |
18%
|
| 3 | Many times | 269 |
11.2%
|
| 4 | Always | 81 |
3.4%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0%
|