| Value | Category | Cases | |
|---|---|---|---|
| 0 | no card | 3 | 
                                                                 
                                    
                                    3.8%
                                 
                                                             | 
                                                        
                    
| 1 | yes, seen | 35 | 
                                                                 
                                    
                                    43.8%
                                 
                                                             | 
                                                        
                    
| 2 | yes, not seen | 33 | 
                                                                 
                                    
                                    41.3%
                                 
                                                             | 
                                                        
                    
| 3 | no longer has card | 9 | 
                                                                 
                                    
                                    11.3%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 6675 |