| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 4599 |
90.1%
|
| 1 | Once | 71 |
1.4%
|
| 2 | Twice | 31 |
0.6%
|
| 3 | 3-5 times | 16 |
0.3%
|
| 4 | More than 6 times | 19 |
0.4%
|
| 5 | I do not know | 1 |
0%
|
| 6 | Not applicable | 7 |
0.1%
|
| Sysmiss | 361 |