| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 126 |
12.9%
|
| 2 | Somewhat difficult | 218 |
22.3%
|
| 3 | Not difficult at all | 621 |
63.6%
|
| 4 | (DK) | 9 |
0.9%
|
| 5 | (ref) | 2 |
0.2%
|
| Sysmiss | 24 |