| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 2180 |
48.4%
|
| 2 | Once | 43 |
1%
|
| 3 | More than once | 138 |
3.1%
|
| 4 | Not applicable | 2128 |
47.2%
|
| Sysmiss | 17 |