| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 2332 |
51.8%
|
| 2 | Once | 11 |
0.2%
|
| 3 | More than once | 9 |
0.2%
|
| 4 | Not applicable | 2137 |
47.4%
|
| Sysmiss | 17 |