| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 1 | 
                                    
                                    0.1%
                                 | 
| 1 | Lower | 295 | 
                                    
                                    29.4%
                                 | 
| 2 | Middle | 292 | 
                                    
                                    29.1%
                                 | 
| 3 | Higher | 416 | 
                                    
                                    41.4%
                                 |