| Value | Category | Cases | |
|---|---|---|---|
| 0 | Incorrect/Do not know | 167 | 
                                    
                                    9.2%
                                 | 
| 1 | Correct | 1643 | 
                                    
                                    90.2%
                                 | 
| 999 | Refused/Skipped | 12 | 
                                    
                                    0.7%
                                 |