| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 2825 |
97.9%
|
| 1 | Once | 24 |
0.8%
|
| 2 | Twice | 12 |
0.4%
|
| 3 | 3-5 times | 7 |
0.2%
|
| 4 | 6 times and more | 11 |
0.4%
|
| 5 | I do not know | 0 |
0%
|
| 6 | Not applicable | 6 |
0.2%
|
| Sysmiss | 1 |