| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 113 |
11.5%
|
| 2 | Somewhat difficult | 205 |
20.9%
|
| 3 | Not difficult at all | 652 |
66.6%
|
| 4 | (DK) | 5 |
0.5%
|
| 5 | (ref) | 4 |
0.4%
|
| Sysmiss | 33 |