| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 1861 |
93.6%
|
| 2 | Once | 70 |
3.5%
|
| 3 | More than once | 41 |
2.1%
|
| 4 | Not applicable | 13 |
0.7%
|
| Sysmiss | 3 |