| Value | Category | Cases | |
|---|---|---|---|
| 1 | 8 |
2.5%
|
|
| 2 | 30 |
9.2%
|
|
| 3 | 35 |
10.8%
|
|
| 4 | 252 |
77.5%
|
|
| Sysmiss | 1 |