| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not acceptable | 84 | 
                                    
                                    6.2%
                                 | 
| 1 | Acceptable | 1251 | 
                                    
                                    91.9%
                                 | 
| 8 | Don't know | 26 | 
                                    
                                    1.9%
                                 |