| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 4533 |
88.8%
|
| 1 | Once | 79 |
1.5%
|
| 2 | Twice | 37 |
0.7%
|
| 3 | 3-5 times | 29 |
0.6%
|
| 4 | 6 times and more | 45 |
0.9%
|
| 5 | I do not know | 3 |
0.1%
|
| 6 | Not applicable | 18 |
0.4%
|
| Sysmiss | 361 |