| Value | Category | Cases | |
|---|---|---|---|
| 0 | 18 |
1.3%
|
|
| 1 | 40 |
2.9%
|
|
| 2 | 17 |
1.2%
|
|
| 3 | 388 |
27.8%
|
|
| 4 | 933 |
66.8%
|
|
| Sysmiss | 174 |