| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 9 | 
                                    
                                    17%
                                 | 
| 1 | 2 | 
                                    
                                    3.8%
                                 | |
| 2 | 5 | 
                                    
                                    9.4%
                                 | |
| 3 | 5 | 
                                    
                                    9.4%
                                 | |
| 4 | 4 | 
                                    
                                    7.5%
                                 | |
| 5 | 3 | 
                                    
                                    5.7%
                                 | |
| 6 | 3 | 
                                    
                                    5.7%
                                 | |
| 7 | 3 | 
                                    
                                    5.7%
                                 | |
| 8 | 1 | 
                                    
                                    1.9%
                                 | |
| 9 | 6 | 
                                    
                                    11.3%
                                 | |
| 10 | 1 | 
                                    
                                    1.9%
                                 | |
| 11 | 4 | 
                                    
                                    7.5%
                                 | |
| 12 | 1 | 
                                    
                                    1.9%
                                 | |
| 44 | marked on card | 5 | 
                                    
                                    9.4%
                                 | 
| 66 | mother reported | 1 | 
                                    
                                    1.9%
                                 | 
| 97 | inconsistent | 0 | 
                                    
                                    0%
                                 | 
| 98 | dk | 0 | 
                                    
                                    0%
                                 | 
| 99 | missing | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 15298 |