| Value | Category | Cases | |
|---|---|---|---|
| 0 | not given | 506 | 
                                    
                                    24.7%
                                 | 
| 1 | 144 | 
                                    
                                    7%
                                 | |
| 2 | 161 | 
                                    
                                    7.9%
                                 | |
| 3 | 147 | 
                                    
                                    7.2%
                                 | |
| 4 | 111 | 
                                    
                                    5.4%
                                 | |
| 5 | 119 | 
                                    
                                    5.8%
                                 | |
| 6 | 100 | 
                                    
                                    4.9%
                                 | |
| 7 | 117 | 
                                    
                                    5.7%
                                 | |
| 8 | 97 | 
                                    
                                    4.7%
                                 | |
| 9 | 109 | 
                                    
                                    5.3%
                                 | |
| 10 | 98 | 
                                    
                                    4.8%
                                 | |
| 11 | 112 | 
                                    
                                    5.5%
                                 | |
| 12 | 124 | 
                                    
                                    6.1%
                                 | |
| 44 | marked on card | 68 | 
                                    
                                    3.3%
                                 | 
| 66 | mother reported | 34 | 
                                    
                                    1.7%
                                 | 
| 97 | inconsistent | 0 | 
                                    
                                    0%
                                 | 
| 98 | dk | 0 | 
                                    
                                    0%
                                 | 
| 99 | missing | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 13304 |