| Value | Category | Cases | |
|---|---|---|---|
| 0 | 438 |
99.1%
|
|
| 1 | 2 |
0.5%
|
|
| 80 | 1 |
0.2%
|
|
| 99 | Unspecified | 1 |
0.2%
|
| Sysmiss | 1589 |