| Value | Category | Cases | |
|---|---|---|---|
| 1 | no | 1254 |
24.6%
|
| 2 | Once | 3 |
0.1%
|
| 3 | More than once | 7 |
0.1%
|
| 4 | Not applicable | 3839 |
75.2%
|
| Sysmiss | 2 |