| Value | Category | Cases | |
|---|---|---|---|
| 0 | 380 |
86%
|
|
| 1 | 13 |
2.9%
|
|
| 2 | 2 |
0.5%
|
|
| 3 | 2 |
0.5%
|
|
| 6 | 1 |
0.2%
|
|
| 99 | Unspecified | 44 |
10%
|
| Sysmiss | 1589 |