| Value | Category | Cases | |
|---|---|---|---|
| 0 | Incorrect/Do not know | 172 | 
                                    
                                    13%
                                 | 
| 1 | Correct | 1132 | 
                                    
                                    85.8%
                                 | 
| 999 | Refused/Skipped | 16 | 
                                    
                                    1.2%
                                 | 
| Sysmiss | 502 |