| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not even once | 2 |
40%
|
| 2 | once | 0 |
0%
|
| 3 | twice | 1 |
20%
|
| 4 | more than two times | 2 |
40%
|
| Sysmiss | Don't know | 0 | |
| Sysmiss | Not applicable | 0 | |
| Sysmiss | Others | 0 | |
| Sysmiss | Can't reveal | 0 | |
| Sysmiss | 4198 |