| Value | Category | Cases | |
|---|---|---|---|
| 1 | Involved, Important | 8594 |
18.8%
|
| 2 | Involved, Not Important | 2137 |
4.7%
|
| 3 | Not Involved | 16029 |
35.2%
|
| 4 | Method Not Applicable | 18834 |
41.3%
|
| Sysmiss | 7194 |