| Value | Category | Cases | |
|---|---|---|---|
| 1 | No ,no difficult | 39504 |
98.9%
|
| 2 | yes some difficult | 345 |
0.9%
|
| 3 | Yes alot of difficult | 68 |
0.2%
|
| 4 | Cannot do it at all | 33 |
0.1%
|
| Sysmiss | 7119 |