| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 465 |
10.3%
|
| 2 | Once | 16 |
0.4%
|
| 3 | More than once | 5 |
0.1%
|
| 4 | Not applicable | 4003 |
88.8%
|
| Sysmiss | 17 |