| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 | 
                                                                 
                                    
                                    11.6%
                                 
                                                             | 
                                                        
                    
| -7 | Does not apply (spontaneous) | 6 | 
                                                                 
                                    
                                    14%
                                 
                                                             | 
                                                        
                    
| 1 | One day or less | 1 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    
| 2 | 1 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| 3 | 4 | 
                                                                 
                                    
                                    9.3%
                                 
                                                             | 
                                                        
                    |
| 5 | 1 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| 7 | 5 | 
                                                                 
                                    
                                    11.6%
                                 
                                                             | 
                                                        
                    |
| 14 | 3 | 
                                                                 
                                    
                                    7%
                                 
                                                             | 
                                                        
                    |
| 15 | 1 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| 21 | 1 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| 22 | 1 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| 30 | 7 | 
                                                                 
                                    
                                    16.3%
                                 
                                                             | 
                                                        
                    |
| 31 | 1 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| 45 | 5 | 
                                                                 
                                    
                                    11.6%
                                 
                                                             | 
                                                        
                    |
| 60 | 1 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 166 |