| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 3011 |
66.8%
|
| 2 | Once | 22 |
0.5%
|
| 3 | More than once | 16 |
0.4%
|
| 4 | Not applicable | 1440 |
32%
|
| Sysmiss | 17 |