| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 267 | 
                                    
                                    4.6%
                                 | 
| 2 | NO | 1622 | 
                                    
                                    27.7%
                                 | 
| 9 | NO RESPONSE | 4 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 3957 | 
                                    
                                    67.6%
                                 |