| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 25 | 
                                    
                                    5.2%
                                 | 
| 1 | 5 | 
                                    
                                    1%
                                 | |
| 2 | 11 | 
                                    
                                    2.3%
                                 | |
| 3 | 7 | 
                                    
                                    1.5%
                                 | |
| 4 | 13 | 
                                    
                                    2.7%
                                 | |
| 5 | 13 | 
                                    
                                    2.7%
                                 | |
| 6 | 23 | 
                                    
                                    4.8%
                                 | |
| 7 | 15 | 
                                    
                                    3.1%
                                 | |
| 8 | 16 | 
                                    
                                    3.3%
                                 | |
| 9 | 14 | 
                                    
                                    2.9%
                                 | |
| 10 | 21 | 
                                    
                                    4.4%
                                 | |
| 11 | 9 | 
                                    
                                    1.9%
                                 | |
| 12 | 15 | 
                                    
                                    3.1%
                                 | |
| 13 | 11 | 
                                    
                                    2.3%
                                 | |
| 14 | 8 | 
                                    
                                    1.7%
                                 | |
| 15 | 14 | 
                                    
                                    2.9%
                                 | |
| 16 | 19 | 
                                    
                                    4%
                                 | |
| 17 | 7 | 
                                    
                                    1.5%
                                 | |
| 18 | 14 | 
                                    
                                    2.9%
                                 | |
| 19 | 15 | 
                                    
                                    3.1%
                                 | |
| 20 | 21 | 
                                    
                                    4.4%
                                 | |
| 21 | 14 | 
                                    
                                    2.9%
                                 | |
| 22 | 13 | 
                                    
                                    2.7%
                                 | |
| 23 | 14 | 
                                    
                                    2.9%
                                 | |
| 24 | 23 | 
                                    
                                    4.8%
                                 | |
| 25 | 11 | 
                                    
                                    2.3%
                                 | |
| 26 | 9 | 
                                    
                                    1.9%
                                 | |
| 27 | 14 | 
                                    
                                    2.9%
                                 | |
| 28 | 14 | 
                                    
                                    2.9%
                                 | |
| 29 | 8 | 
                                    
                                    1.7%
                                 | |
| 30 | 7 | 
                                    
                                    1.5%
                                 | |
| 31 | 2 | 
                                    
                                    0.4%
                                 | |
| 44 | marked on card | 49 | 
                                    
                                    10.2%
                                 | 
| 66 | mother reported | 5 | 
                                    
                                    1%
                                 | 
| 97 | inconsistent | 0 | 
                                    
                                    0%
                                 | 
| 98 | dk | 0 | 
                                    
                                    0%
                                 | 
| 99 | missing | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 14872 |