| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 172 | 
                                    
                                    9.4%
                                 | 
| 1 | Yes | 1632 | 
                                    
                                    89.6%
                                 | 
| 999 | Refused/Skipped | 18 | 
                                    
                                    1%
                                 |