| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days or Hours | 277 | 
                            
                             
                                
                                98.2%
                                                             
                            
                         | 
                        
                    
| 98 | Don't know | 5 | 
                            
                             
                                
                                1.8%
                                                             
                            
                         | 
                        
                    
| Sysmiss | 317 |