| Value | Category | Cases | |
|---|---|---|---|
| -8 | Do not know | 81 | 
                                    
                                    4.1%
                                 | 
| 1 | Yes | 1640 | 
                                    
                                    83.4%
                                 | 
| 2 | No | 246 | 
                                    
                                    12.5%
                                 |