| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 142 | 
                                                                 
                                    
                                    22.5%
                                 
                                                             | 
                                                        
                    
| 2 | No | 488 | 
                                                                 
                                    
                                    77.2%
                                 
                                                             | 
                                                        
                    
| 999 | Don't know | 2 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 121 |