| Value | Category | Cases | |
|---|---|---|---|
| 1 | OBSERVEE | 3285 | 
                                    
                                    36.4%
                                 | 
| 2 | NON OBSERVEE | 1723 | 
                                    
                                    19.1%
                                 | 
| Sysmiss | 4029 | 
                                    
                                    44.6%
                                 |