| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 1742 | 
                                    
                                    85.1%
                                 | 
| 1 | 6 | 
                                    
                                    0.3%
                                 | |
| 2 | 7 | 
                                    
                                    0.3%
                                 | |
| 3 | 8 | 
                                    
                                    0.4%
                                 | |
| 4 | 2 | 
                                    
                                    0.1%
                                 | |
| 5 | 2 | 
                                    
                                    0.1%
                                 | |
| 6 | 3 | 
                                    
                                    0.1%
                                 | |
| 7 | 2 | 
                                    
                                    0.1%
                                 | |
| 8 | 5 | 
                                    
                                    0.2%
                                 | |
| 9 | 3 | 
                                    
                                    0.1%
                                 | |
| 10 | 2 | 
                                    
                                    0.1%
                                 | |
| 11 | 4 | 
                                    
                                    0.2%
                                 | |
| 12 | 5 | 
                                    
                                    0.2%
                                 | |
| 44 | marked on card | 109 | 
                                    
                                    5.3%
                                 | 
| 66 | mother reported | 146 | 
                                    
                                    7.1%
                                 | 
| 97 | inconsistent | 0 | 
                                    
                                    0%
                                 | 
| 98 | dk | 1 | 
                                    
                                    0%
                                 | 
| 99 | missing | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 13304 |