| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 19662 | 
                                    
                                    97.6%
                                 | 
| 2 | Yes - Some difficulty | 395 | 
                                    
                                    2%
                                 | 
| 3 | Yes - A lot of difficulty | 86 | 
                                    
                                    0.4%
                                 | 
| 4 | Cannot perform activity at all | 12 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 3238 |