| Value | Category | Cases | |
|---|---|---|---|
| 0 | no card | 71 | 
                                                                 
                                    
                                    2.5%
                                 
                                                             | 
                                                        
                    
| 1 | yes, seen | 1946 | 
                                                                 
                                    
                                    67.7%
                                 
                                                             | 
                                                        
                    
| 2 | yes, not seen | 696 | 
                                                                 
                                    
                                    24.2%
                                 
                                                             | 
                                                        
                    
| 3 | no longer has card | 163 | 
                                                                 
                                    
                                    5.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 3879 |