| Value | Category | Cases | |
|---|---|---|---|
| 0 | 3 |
0.6%
|
|
| 1 | 320 |
63.4%
|
|
| 2 | 181 |
35.8%
|
|
| 9 | 1 |
0.2%
|
|
| Sysmiss | 1005 |