| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 8 | 
                                    
                                    0.2%
                                 | 
| 2 | NO | 542 | 
                                    
                                    13.1%
                                 | 
| 9 | NO RESPONDE | 1 | 
                                    
                                    0%
                                 | 
| Sysmiss | 3571 | 
                                    
                                    86.6%
                                 |