| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 2 weeks | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 2 | Between 2 and 4 weeks | 1 | 
                                                                 
                                    
                                    1.6%
                                 
                                                             | 
                                                        
                    
| 3 | Between 1 and 2 months | 7 | 
                                                                 
                                    
                                    11.5%
                                 
                                                             | 
                                                        
                    
| 4 | Between 2 and 6 months | 16 | 
                                                                 
                                    
                                    26.2%
                                 
                                                             | 
                                                        
                    
| 5 | More than 6 months | 11 | 
                                                                 
                                    
                                    18%
                                 
                                                             | 
                                                        
                    
| 6 | Never | 3 | 
                                                                 
                                    
                                    4.9%
                                 
                                                             | 
                                                        
                    
| 7 | Don’t know (uncertain) | 23 | 
                                                                 
                                    
                                    37.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 791 |