| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 | 
                                    
                                    1.6%
                                 | 
| -8 | Refusal (spontaneous) | 9 | 
                                    
                                    3.5%
                                 | 
| 1 | Yes | 41 | 
                                    
                                    16%
                                 | 
| 2 | No | 203 | 
                                    
                                    79%
                                 | 
| Sysmiss | 355 |