| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 1450 |
72.9%
|
| 2 | Once | 6 |
0.3%
|
| 3 | More than once | 1 |
0.1%
|
| 4 | Not applicable | 528 |
26.6%
|
| Sysmiss | 3 |