| Value | Category | Cases | |
|---|---|---|---|
| 0 | Incorrect/Do not know | 170 | 
                                    
                                    9.3%
                                 | 
| 1 | Correct | 1618 | 
                                    
                                    88.9%
                                 | 
| 999 | Refused/Skipped | 33 | 
                                    
                                    1.8%
                                 | 
| Sysmiss | 1 |