| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 910 | 
                                    
                                    11.1%
                                 | 
| 2 | NO | 364 | 
                                    
                                    4.4%
                                 | 
| 9 | NO RESPONDE | 12 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 6931 | 
                                    
                                    84.3%
                                 |