| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 31 | 
                                    
                                    3.6%
                                 | 
| 2 | NO | 147 | 
                                    
                                    16.9%
                                 | 
| Sysmiss | 693 | 
                                    
                                    79.6%
                                 |