| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 140 | 
                                    
                                    10.3%
                                 | 
| 2 | NO | 139 | 
                                    
                                    10.2%
                                 | 
| 99 | NO RESPONDE | 1 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 1084 | 
                                    
                                    79.5%
                                 |