| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 717 | 
                                    
                                    16.9%
                                 | 
| 2 | NO | 161 | 
                                    
                                    3.8%
                                 | 
| 9 | NO RESPONSE | 4 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 3353 | 
                                    
                                    79.2%
                                 |