| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 1890 |
95.1%
|
| 2 | Once | 10 |
0.5%
|
| 3 | More than once | 4 |
0.2%
|
| 4 | Not applicable | 81 |
4.1%
|
| Sysmiss | 3 |