| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 637 | 
                                                                 
                                    
                                    21.2%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 2369 | 
                                                                 
                                    
                                    78.8%
                                 
                                                             | 
                                                        
                    
| 98 | DK | 2 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 88 | NA | 6097 | |
| 99 | Missing | 23 |