| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 712 |
35.8%
|
| 2 | Once | 19 |
1%
|
| 3 | More than once | 14 |
0.7%
|
| 4 | Not applicable | 1240 |
62.4%
|
| Sysmiss | 3 |