| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 460 |
10.2%
|
| 2 | Once | 12 |
0.3%
|
| 3 | More than once | 13 |
0.3%
|
| 4 | Not applicable | 4004 |
88.9%
|
| Sysmiss | 17 |