| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 10 | 
                                    
                                    0.3%
                                 | 
| 2 | NO | 2290 | 
                                    
                                    61%
                                 | 
| 9 | NO RESPONDE | 6 | 
                                    
                                    0.2%
                                 | 
| Sysmiss | 1451 | 
                                    
                                    38.6%
                                 |