| Value | Category | Cases | |
|---|---|---|---|
| 1 | No ,no difficult | 41207 |
98.6%
|
| 2 | yes some difficult | 475 |
1.1%
|
| 3 | Yes alot of difficult | 64 |
0.2%
|
| 4 | Cannot do it at all | 36 |
0.1%
|
| Sysmiss | 7025 |