| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 0 | 
                                    
                                    0%
                                 | 
| 4 | 1 | 
                                    
                                    20%
                                 | |
| 9 | 1 | 
                                    
                                    20%
                                 | |
| 17 | 2 | 
                                    
                                    40%
                                 | |
| 26 | 1 | 
                                    
                                    20%
                                 | |
| 44 | marked on card | 0 | 
                                    
                                    0%
                                 | 
| 66 | mother reported | 0 | 
                                    
                                    0%
                                 | 
| 97 | inconsistent | 0 | 
                                    
                                    0%
                                 | 
| 98 | dk | 0 | 
                                    
                                    0%
                                 | 
| 99 | missing | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 15346 |