| Value | Category | Cases | |
|---|---|---|---|
| 1 | No ,no difficult | 41183 |
98.6%
|
| 2 | yes some difficult | 489 |
1.2%
|
| 3 | Yes alot of difficult | 77 |
0.2%
|
| 4 | Cannot Seeit at all | 33 |
0.1%
|
| Sysmiss | 7025 |