| Value | Category | Cases | |
|---|---|---|---|
| 0 | preschool | 8 | 
                                    
                                    18.6%
                                 | 
| 1 | primary | 22 | 
                                    
                                    51.2%
                                 | 
| 2 | secondary | 13 | 
                                    
                                    30.2%
                                 | 
| 3 | higher | 0 | 
                                    
                                    0%
                                 | 
| 8 | dk | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 6349 |