| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 474 |
10.5%
|
| 2 | Once | 1 |
0%
|
| 3 | More than once | 0 |
0%
|
| 4 | Not applicable | 4013 |
89.1%
|
| Sysmiss | 18 |