| Value | Category | Cases | |
|---|---|---|---|
| -999 | Don't know | 0 | 
                                    
                                    0%
                                 | 
| -888 | Not available | 1 | 
                                    
                                    0%
                                 | 
| 1 | Yes | 449 | 
                                    
                                    7.5%
                                 | 
| 2 | No | 5529 | 
                                    
                                    92.5%
                                 |