| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 4 | 
                                    
                                    1.1%
                                 | 
| -8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 1 | Yes | 351 | 
                                    
                                    94.6%
                                 | 
| 2 | No | 16 | 
                                    
                                    4.3%
                                 | 
| Sysmiss | 584 |