| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 125 | 
                                    
                                    1.5%
                                 | 
| 2 | NO | 131 | 
                                    
                                    1.6%
                                 | 
| 9 | NO RESPONDE | 2 | 
                                    
                                    0%
                                 | 
| Sysmiss | 7959 | 
                                    
                                    96.9%
                                 |