| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 45886 |
99%
|
| 2 | YES, SOME DIFFICULTY | 253 |
0.5%
|
| 3 | YES, A LOT OF DIFFICULTY | 109 |
0.2%
|
| 4 | CANNOT PERFORM ACTIVITY AT ALL | 121 |
0.3%
|
| Sysmiss | 4107 |