| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 671 |
33.8%
|
| 2 | Once | 9 |
0.5%
|
| 3 | More than once | 5 |
0.3%
|
| 4 | Not applicable | 1298 |
65.3%
|
| Sysmiss | 5 |