| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 253 | 
                                    
                                    52.8%
                                 | 
| 1 | 10 | 
                                    
                                    2.1%
                                 | |
| 2 | 20 | 
                                    
                                    4.2%
                                 | |
| 3 | 12 | 
                                    
                                    2.5%
                                 | |
| 4 | 12 | 
                                    
                                    2.5%
                                 | |
| 5 | 13 | 
                                    
                                    2.7%
                                 | |
| 6 | 26 | 
                                    
                                    5.4%
                                 | |
| 7 | 13 | 
                                    
                                    2.7%
                                 | |
| 8 | 13 | 
                                    
                                    2.7%
                                 | |
| 9 | 7 | 
                                    
                                    1.5%
                                 | |
| 10 | 16 | 
                                    
                                    3.3%
                                 | |
| 11 | 17 | 
                                    
                                    3.5%
                                 | |
| 12 | 16 | 
                                    
                                    3.3%
                                 | |
| 44 | marked on card | 43 | 
                                    
                                    9%
                                 | 
| 66 | mother reported | 8 | 
                                    
                                    1.7%
                                 | 
| 97 | inconsistent | 0 | 
                                    
                                    0%
                                 | 
| 98 | dk | 0 | 
                                    
                                    0%
                                 | 
| 99 | missing | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 14872 |