| Value | Category | Cases | |
|---|---|---|---|
| 0 | 7 |
0.5%
|
|
| 1 | yes | 70 |
5.2%
|
| 2 | no | 1259 |
93.6%
|
| 3 | uncertain | 8 |
0.6%
|
| 9 | 1 |
0.1%
|
|
| Sysmiss | 1685 |