| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 2471 |
48.4%
|
| 1 | Once | 37 |
0.7%
|
| 2 | Twice | 22 |
0.4%
|
| 3 | 3-5 times | 13 |
0.3%
|
| 4 | 6 times and more | 22 |
0.4%
|
| 5 | I do not know | 4 |
0.1%
|
| 6 | Not applicable | 2175 |
42.6%
|
| Sysmiss | 361 |