| Value | Category | Cases | |
|---|---|---|---|
| 1 | No ,no difficult | 41541 |
98.8%
|
| 2 | yes some difficult | 387 |
0.9%
|
| 3 | Yes alot of difficult | 77 |
0.2%
|
| 4 | Cannot do it at all | 28 |
0.1%
|
| Sysmiss | 6990 |