| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 373 | 
                                    
                                    4.5%
                                 | 
| 2 | NO | 865 | 
                                    
                                    10.5%
                                 | 
| 9 | NO RESPONDE | 7 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 6972 | 
                                    
                                    84.8%
                                 |