| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 4682 | 
                                                                 
                                    
                                    19.5%
                                 
                                                             | 
                                                        
                    
| 2 | No | 18913 | 
                                                                 
                                    
                                    78.7%
                                 
                                                             | 
                                                        
                    
| 9 | Missing | 441 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 491 |