| Value | Category | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 1 | ...menos de 1 mes? | 
                                    
                    
                        | 2 | ...de 1 a 3 meses? | 
                                    
                    
                        | 3 | ...más de 3 a 6 meses? | 
                                    
                    
                        | 4 | ...más de 6 a 12 meses? | 
                                    
                    
                        | 5 | ...más de 1 año? | 
                                    
                    
                        | 9 | Ns./Nr. | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.