| Value | Category | Cases | |
|---|---|---|---|
| 0 | Incorrect/Do not know | 104 | 
                                    
                                    5.7%
                                 | 
| 1 | Correct | 1700 | 
                                    
                                    93.3%
                                 | 
| 999 | Refused/Skipped | 18 | 
                                    
                                    1%
                                 |