| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 516 | 
                                                                 
                                    
                                    99%
                                 
                                                             | 
                                                        
                    
| 1 | Yes(address recorded) | 5 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    
| 999 | Do not know(or does not apply) | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 232 |