| Value | Category | Cases | |
|---|---|---|---|
| 0 | INFORMAL | 218 | 
                                    
                                    54.4%
                                 | 
| 1 | FORMAL | 140 | 
                                    
                                    34.9%
                                 | 
| Sysmiss | 43 | 
                                    
                                    10.7%
                                 |