| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 700 |
35.2%
|
| 2 | Once | 11 |
0.6%
|
| 3 | More than once | 15 |
0.8%
|
| 4 | Not applicable | 1257 |
63.2%
|
| Sysmiss | 5 |