| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 | 
                                    
                                    10%
                                 | 
| 0 | No employees trained | 3 | 
                                    
                                    30%
                                 | 
| 10 | 1 | 
                                    
                                    10%
                                 | |
| 50 | 1 | 
                                    
                                    10%
                                 | |
| 100 | 4 | 
                                    
                                    40%
                                 | |
| Sysmiss | 205 |