| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 167 | 
                                    
                                    8.2%
                                 | 
| 1 | 17 | 
                                    
                                    0.8%
                                 | |
| 2 | 43 | 
                                    
                                    2.1%
                                 | |
| 3 | 53 | 
                                    
                                    2.6%
                                 | |
| 4 | 40 | 
                                    
                                    2%
                                 | |
| 5 | 40 | 
                                    
                                    2%
                                 | |
| 6 | 73 | 
                                    
                                    3.6%
                                 | |
| 7 | 72 | 
                                    
                                    3.5%
                                 | |
| 8 | 56 | 
                                    
                                    2.7%
                                 | |
| 9 | 46 | 
                                    
                                    2.2%
                                 | |
| 10 | 53 | 
                                    
                                    2.6%
                                 | |
| 11 | 60 | 
                                    
                                    2.9%
                                 | |
| 12 | 46 | 
                                    
                                    2.2%
                                 | |
| 13 | 72 | 
                                    
                                    3.5%
                                 | |
| 14 | 50 | 
                                    
                                    2.4%
                                 | |
| 15 | 66 | 
                                    
                                    3.2%
                                 | |
| 16 | 78 | 
                                    
                                    3.8%
                                 | |
| 17 | 65 | 
                                    
                                    3.2%
                                 | |
| 18 | 66 | 
                                    
                                    3.2%
                                 | |
| 19 | 75 | 
                                    
                                    3.7%
                                 | |
| 20 | 104 | 
                                    
                                    5.1%
                                 | |
| 21 | 85 | 
                                    
                                    4.2%
                                 | |
| 22 | 83 | 
                                    
                                    4.1%
                                 | |
| 23 | 65 | 
                                    
                                    3.2%
                                 | |
| 24 | 79 | 
                                    
                                    3.9%
                                 | |
| 25 | 68 | 
                                    
                                    3.3%
                                 | |
| 26 | 54 | 
                                    
                                    2.6%
                                 | |
| 27 | 56 | 
                                    
                                    2.7%
                                 | |
| 28 | 43 | 
                                    
                                    2.1%
                                 | |
| 29 | 46 | 
                                    
                                    2.2%
                                 | |
| 30 | 31 | 
                                    
                                    1.5%
                                 | |
| 31 | 16 | 
                                    
                                    0.8%
                                 | |
| 44 | marked on card | 58 | 
                                    
                                    2.8%
                                 | 
| 66 | mother reported | 20 | 
                                    
                                    1%
                                 | 
| 97 | inconsistent | 0 | 
                                    
                                    0%
                                 | 
| 98 | dk | 1 | 
                                    
                                    0%
                                 | 
| 99 | missing | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 13304 |