| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 0 | 
                                    
                                    0%
                                 | 
| -8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| -7 | DOES NOT APPLY | 0 | 
                                    
                                    0%
                                 | 
| 0 | No obstacle | 249 | 
                                    
                                    67.1%
                                 | 
| 1 | Minor obstacle | 37 | 
                                    
                                    10%
                                 | 
| 2 | Moderate obstacle | 29 | 
                                    
                                    7.8%
                                 | 
| 3 | Major obstacle | 35 | 
                                    
                                    9.4%
                                 | 
| 4 | Very severe obstacle | 21 | 
                                    
                                    5.7%
                                 | 
| Sysmiss | 584 |