| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 weeks | 1 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 2 | Between 2 and 4 weeks | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 3 | Between 1 and 2 months | 5 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    
| 4 | Between 2 and 6 months | 44 | 
                                                                 
                                    
                                    9.7%
                                 
                                                             | 
                                                        
                    
| 5 | More than 6 months | 315 | 
                                                                 
                                    
                                    69.7%
                                 
                                                             | 
                                                        
                    
| 6 | Don’t know (uncertain) | 87 | 
                                                                 
                                    
                                    19.2%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 48 |