| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 32 | 
                                    
                                    16.2%
                                 | 
| 2 | No | 138 | 
                                    
                                    69.7%
                                 | 
| 3 | Don't know | 28 | 
                                    
                                    14.1%
                                 | 
| Sysmiss | 667 |