| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 501 |
11.1%
|
| 2 | Once | 2 |
0%
|
| 3 | More than once | 0 |
0%
|
| 4 | Not applicable | 3985 |
88.4%
|
| Sysmiss | 18 |