| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 15 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    
| 0 | No | 1166 | 
                                                                 
                                    
                                    97.2%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 19 | 
                                                                 
                                    
                                    1.6%
                                 
                                                             |