| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very poor | 3 | 
                                    
                                    2.6%
                                 | 
| 2 | poor | 26 | 
                                    
                                    22.8%
                                 | 
| 3 | high | 78 | 
                                    
                                    68.4%
                                 | 
| 4 | very hight | 7 | 
                                    
                                    6.1%
                                 | 
| Sysmiss | 477 |