| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 90 |
9.3%
|
| 2 | Somewhat difficult | 195 |
20.2%
|
| 3 | Not difficult at all | 676 |
70.1%
|
| 4 | (DK) | 0 |
0%
|
| 5 | (ref) | 3 |
0.3%
|
| Sysmiss | 43 |