| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 459 |
10.2%
|
| 2 | Once | 14 |
0.3%
|
| 3 | More than once | 9 |
0.2%
|
| 4 | Not applicable | 4008 |
88.9%
|
| Sysmiss | 16 |