| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1650 |
52.4%
|
| 1 | Once | 18 |
0.6%
|
| 2 | More than once | 27 |
0.9%
|
| 3 | Not applicable | 1454 |
46.2%
|
| 4 | No answer/ refused to | 0 |
0%
|
| Sysmiss | 1 |