| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 1618 | 
                                                                 
                                    
                                    42%
                                 
                                                             | 
                                                        
                    
| 2 | no | 1322 | 
                                                                 
                                    
                                    34.3%
                                 
                                                             | 
                                                        
                    
| 3 | do not know | 910 | 
                                                                 
                                    
                                    23.6%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 135 |