| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 954 | 
                                    
                                    46.6%
                                 | 
| 1 | 9 | 
                                    
                                    0.4%
                                 | |
| 2 | 25 | 
                                    
                                    1.2%
                                 | |
| 3 | 30 | 
                                    
                                    1.5%
                                 | |
| 4 | 23 | 
                                    
                                    1.1%
                                 | |
| 5 | 21 | 
                                    
                                    1%
                                 | |
| 6 | 34 | 
                                    
                                    1.7%
                                 | |
| 7 | 50 | 
                                    
                                    2.4%
                                 | |
| 8 | 34 | 
                                    
                                    1.7%
                                 | |
| 9 | 24 | 
                                    
                                    1.2%
                                 | |
| 10 | 38 | 
                                    
                                    1.9%
                                 | |
| 11 | 35 | 
                                    
                                    1.7%
                                 | |
| 12 | 24 | 
                                    
                                    1.2%
                                 | |
| 13 | 32 | 
                                    
                                    1.6%
                                 | |
| 14 | 28 | 
                                    
                                    1.4%
                                 | |
| 15 | 33 | 
                                    
                                    1.6%
                                 | |
| 16 | 36 | 
                                    
                                    1.8%
                                 | |
| 17 | 32 | 
                                    
                                    1.6%
                                 | |
| 18 | 26 | 
                                    
                                    1.3%
                                 | |
| 19 | 41 | 
                                    
                                    2%
                                 | |
| 20 | 49 | 
                                    
                                    2.4%
                                 | |
| 21 | 38 | 
                                    
                                    1.9%
                                 | |
| 22 | 31 | 
                                    
                                    1.5%
                                 | |
| 23 | 45 | 
                                    
                                    2.2%
                                 | |
| 24 | 35 | 
                                    
                                    1.7%
                                 | |
| 25 | 46 | 
                                    
                                    2.2%
                                 | |
| 26 | 26 | 
                                    
                                    1.3%
                                 | |
| 27 | 32 | 
                                    
                                    1.6%
                                 | |
| 28 | 29 | 
                                    
                                    1.4%
                                 | |
| 29 | 18 | 
                                    
                                    0.9%
                                 | |
| 30 | 10 | 
                                    
                                    0.5%
                                 | |
| 31 | 5 | 
                                    
                                    0.2%
                                 | |
| 44 | marked on card | 99 | 
                                    
                                    4.8%
                                 | 
| 66 | mother reported | 55 | 
                                    
                                    2.7%
                                 | 
| 97 | inconsistent | 0 | 
                                    
                                    0%
                                 | 
| 98 | dk | 0 | 
                                    
                                    0%
                                 | 
| 99 | missing | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 13304 |