| Value | Category | Cases | |
|---|---|---|---|
| 0 | 431 |
97.5%
|
|
| 1 | 1 |
0.2%
|
|
| 3 | 1 |
0.2%
|
|
| 60 | 1 |
0.2%
|
|
| 90 | 1 |
0.2%
|
|
| 99 | Unspecified | 7 |
1.6%
|
| Sysmiss | 1589 |