| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 87 |
9.1%
|
| 2 | Somewhat difficult | 264 |
27.7%
|
| 3 | Not difficult at all | 593 |
62.2%
|
| 4 | (DK) | 6 |
0.6%
|
| 5 | (ref) | 4 |
0.4%
|
| Sysmiss | 47 |