| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 0 | 
                                    
                                    0%
                                 | 
| -8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 1 | Yes | 60 | 
                                    
                                    22.2%
                                 | 
| 2 | No | 210 | 
                                    
                                    77.8%
                                 | 
| Sysmiss | 685 |