| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 2541 | 
                                    
                                    74.9%
                                 | 
| 2 | SOME DIFFICULTY | 368 | 
                                    
                                    10.9%
                                 | 
| 3 | A LOT OF DIFFICULTY | 56 | 
                                    
                                    1.7%
                                 | 
| 4 | CANNOT WALK / CLIMB STEPS AT ALL | 1 | 
                                    
                                    0%
                                 | 
| 9 | NO RESPONSE | 1 | 
                                    
                                    0%
                                 | 
| Sysmiss | 424 | 
                                    
                                    12.5%
                                 |