| Value | Category | Cases | |
|---|---|---|---|
| 1 | no | 247 |
4.8%
|
| 2 | Once | 0 |
0%
|
| 3 | More than once | 7 |
0.1%
|
| 4 | Not applicable | 4849 |
95%
|
| Sysmiss | 2 |