| Value | Category | Cases | |
|---|---|---|---|
| 1 | No no difficulty | 13344 |
97.1%
|
| 2 | Yes some difficulty | 317 |
2.3%
|
| 3 | Yes a lot of difficulty | 64 |
0.5%
|
| 4 | Cannot hear at all | 20 |
0.1%
|
| Sysmiss | 7 |