| Value | Category | Cases | |
|---|---|---|---|
| 0 | haven't received it yet | 1 |
0.2%
|
| 1 | normal | 386 |
93.5%
|
| 2 | abnormal | 24 |
5.8%
|
| 3 | didn't request it | 2 |
0.5%
|
| Sysmiss | 12502 |