| Value | Category | Cases | |
|---|---|---|---|
| 1 | no | 4933 |
96.6%
|
| 2 | Once | 22 |
0.4%
|
| 3 | More than once | 36 |
0.7%
|
| 4 | Not applicable | 112 |
2.2%
|
| Sysmiss | 2 |