| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO, NO DIFFICULTY | 26903 |
99.3%
|
| 2 | YES, SOME | 147 |
0.5%
|
| 3 | YES, A LOT | 19 |
0.1%
|
| 4 | CANNOT HEAR | 37 |
0.1%
|
| Sysmiss | 1246 |