| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | No | 2208 | 
                                    
                                    92%
                                 | 
| 1 | Yes | 184 | 
                                    
                                    7.7%
                                 | 
| 9 | Don't know | 8 | 
                                    
                                    0.3%
                                 |