| Value | Category | Cases | |
|---|---|---|---|
| 1 | No ,no difficult | 41241 |
98.1%
|
| 2 | yes some difficult | 693 |
1.6%
|
| 3 | Yes alot of difficult | 87 |
0.2%
|
| 4 | Cannot do it at all | 12 |
0%
|
| Sysmiss | 6990 |