| Value | Category | Cases | |
|---|---|---|---|
| 0 | no card | 31 | 
                                                                 
                                    
                                    3.9%
                                 
                                                             | 
                                                        
                    
| 1 | yes, seen | 427 | 
                                                                 
                                    
                                    53.8%
                                 
                                                             | 
                                                        
                    
| 2 | yes, not seen | 273 | 
                                                                 
                                    
                                    34.4%
                                 
                                                             | 
                                                        
                    
| 3 | no longer has card | 63 | 
                                                                 
                                    
                                    7.9%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 5961 |