| Value | Category | Cases | |
|---|---|---|---|
| -9 | DON'T KNOW | 11 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    
| -7 | DOES NOT APPLY | 2 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 0 | No obstacle | 476 | 
                                                                 
                                    
                                    46.2%
                                 
                                                             | 
                                                        
                    
| 1 | Minor obstacle | 199 | 
                                                                 
                                    
                                    19.3%
                                 
                                                             | 
                                                        
                    
| 2 | Moderate obstacle | 181 | 
                                                                 
                                    
                                    17.6%
                                 
                                                             | 
                                                        
                    
| 3 | Major obstacle | 121 | 
                                                                 
                                    
                                    11.7%
                                 
                                                             | 
                                                        
                    
| 4 | Very severe obstacle | 40 | 
                                                                 
                                    
                                    3.9%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 2 |