| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 4519 |
88.5%
|
| 1 | Once | 89 |
1.7%
|
| 2 | Twice | 45 |
0.9%
|
| 3 | 3-5 times | 33 |
0.6%
|
| 4 | 6 times and more | 49 |
1%
|
| 5 | I do not know | 0 |
0%
|
| 6 | Not applicable | 9 |
0.2%
|
| Sysmiss | 361 |