| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not acceptable | 136 | 
                                    
                                    10%
                                 | 
| 1 | Acceptable | 1156 | 
                                    
                                    85%
                                 | 
| 8 | Don't know | 68 | 
                                    
                                    5%
                                 |