| Value | Category | Cases | |
|---|---|---|---|
| 0 | 498 |
91.9%
|
|
| 1 | 12 |
2.2%
|
|
| 2 | 19 |
3.5%
|
|
| 3 | 10 |
1.8%
|
|
| 5 | 2 |
0.4%
|
|
| 6 | 1 |
0.2%
|
|
| Sysmiss | 19 |