| Value | Category | Cases | |
|---|---|---|---|
| 0 | 391 |
88.5%
|
|
| 1 | 3 |
0.7%
|
|
| 6 | 1 |
0.2%
|
|
| 8 | 1 |
0.2%
|
|
| 10 | 2 |
0.5%
|
|
| 99 | Unspecified | 44 |
10%
|
| Sysmiss | 1589 |