| Value | Category | Cases | |
|---|---|---|---|
| 1 | no | 4928 |
96.5%
|
| 2 | Once | 26 |
0.5%
|
| 3 | More than once | 31 |
0.6%
|
| 4 | Not applicable | 118 |
2.3%
|
| Sysmiss | 2 |