| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not acceptable | 242 | 
                                    
                                    18%
                                 | 
| 1 | Acceptable | 1039 | 
                                    
                                    77.3%
                                 | 
| 8 | Don't know | 63 | 
                                    
                                    4.7%
                                 |