| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 762 | 
                                    
                                    20.4%
                                 | 
| 1 | vacc. date on card | 1991 | 
                                    
                                    53.2%
                                 | 
| 2 | reported by mother | 854 | 
                                    
                                    22.8%
                                 | 
| 3 | vacc. marked on card | 122 | 
                                    
                                    3.3%
                                 | 
| 8 | dk | 14 | 
                                    
                                    0.4%
                                 | 
| Sysmiss | 11203 |