| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 1976 | 
                                    
                                    17.2%
                                 | 
| 2 | NO | 1578 | 
                                    
                                    13.8%
                                 | 
| 9 | NO RESPONSE | 8 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 7902 | 
                                    
                                    68.9%
                                 |