| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 159 | 
                                    
                                    2.9%
                                 | 
| 2 | NO | 525 | 
                                    
                                    9.6%
                                 | 
| 9 | NO RESPONSE | 5 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 4790 | 
                                    
                                    87.4%
                                 |