| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 | 
                                                                 
                                    
                                    25%
                                 
                                                             | 
                                                        
                    
| 25 | 1 | 
                                                                 
                                    
                                    12.5%
                                 
                                                             | 
                                                        
                    |
| 80 | 1 | 
                                                                 
                                    
                                    12.5%
                                 
                                                             | 
                                                        
                    |
| 330 | 1 | 
                                                                 
                                    
                                    12.5%
                                 
                                                             | 
                                                        
                    |
| 400 | 1 | 
                                                                 
                                    
                                    12.5%
                                 
                                                             | 
                                                        
                    |
| 3600 | 1 | 
                                                                 
                                    
                                    12.5%
                                 
                                                             | 
                                                        
                    |
| 17200 | 1 | 
                                                                 
                                    
                                    12.5%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 201 |