| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 369 |
19%
|
| 2 | Somewhat difficult | 901 |
46.4%
|
| 3 | Not difficult at all | 668 |
34.4%
|
| 4 | (DK) | 3 |
0.2%
|
| 5 | (ref) | 1 |
0.1%
|
| Sysmiss | 69 |