| Value | Category | Cases | |
|---|---|---|---|
| 1 | Too busy/Do not have time | 0 | 
                                
                                0%
                             | 
| 2 | Tired of Research | 3 | 
                                
                                0%
                             | 
| 3 | Research not beneficial | 0 | 
                                
                                0%
                             | 
| 4 | Not interested | 6 | 
                                
                                0%
                             | 
| 5 | No reason given | 5 | 
                                
                                0%
                             | 
| 6 | Other | 0 | 
                                
                                0%
                             | 
| 9 | Not applicable | 14841 | 
                                
                                99.9%
                             |