| Value | Category | Cases | |
|---|---|---|---|
| 0 | Base wave | 1124 | 
                                                                 
                                    
                                    56%
                                 
                                                             | 
                                                        
                    
| 1 | Panel wave | 883 | 
                                                                 
                                    
                                    44%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1117 |