| Value | Category | Cases | |
|---|---|---|---|
| 1 | too expensive | 341 | 
                                                                 
                                    
                                    21.5%
                                 
                                                             | 
                                                        
                    
| 2 | tedious (time censoring / complicated) | 319 | 
                                                                 
                                    
                                    20.1%
                                 
                                                             | 
                                                        
                    
| 3 | useless | 646 | 
                                                                 
                                    
                                    40.7%
                                 
                                                             | 
                                                        
                    
| 4 | other | 283 | 
                                                                 
                                    
                                    17.8%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 3369 |