| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 2355 |
52.3%
|
| 2 | Once | 5 |
0.1%
|
| 3 | More than once | 7 |
0.2%
|
| 4 | Not applicable | 2121 |
47.1%
|
| Sysmiss | 18 |