| Value | Category | Cases | |
|---|---|---|---|
| 1 | too expensive | 277 | 
                                                                 
                                    
                                    23.9%
                                 
                                                             | 
                                                        
                    
| 2 | tedious (time censoring / complicated) | 310 | 
                                                                 
                                    
                                    26.7%
                                 
                                                             | 
                                                        
                    
| 3 | useless | 310 | 
                                                                 
                                    
                                    26.7%
                                 
                                                             | 
                                                        
                    
| 4 | other | 264 | 
                                                                 
                                    
                                    22.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 3797 |