| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 27 |
1.4%
|
| 2 | Once | 0 |
0%
|
| 3 | More than once | 0 |
0%
|
| 4 | Not applicable | 1956 |
98.4%
|
| Sysmiss | 5 |