| Value | Category | Cases | |
|---|---|---|---|
| 1 | Involved, Important | 11629 |
25.5%
|
| 2 | Involved, Not Important | 2915 |
6.4%
|
| 3 | Not Involved | 19495 |
42.8%
|
| 4 | Method Not Applicable | 11555 |
25.3%
|
| Sysmiss | 7194 |