| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 4590 |
89.9%
|
| 1 | Once | 43 |
0.8%
|
| 2 | Twice | 32 |
0.6%
|
| 3 | 3-5 times | 34 |
0.7%
|
| 4 | 6 times and more | 39 |
0.8%
|
| 5 | I do not know | 0 |
0%
|
| 6 | Not applicable | 6 |
0.1%
|
| Sysmiss | 361 |