| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 93 |
10.1%
|
| 2 | Somewhat difficult | 232 |
25.2%
|
| 3 | Not difficult at all | 595 |
64.5%
|
| 4 | (DK) | 2 |
0.2%
|
| 5 | (ref) | 0 |
0%
|
| Sysmiss | 89 |