| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 86 |
9.1%
|
| 2 | Somewhat difficult | 297 |
31.5%
|
| 3 | Not difficult at all | 550 |
58.3%
|
| 4 | (DK) | 8 |
0.8%
|
| 5 | (ref) | 3 |
0.3%
|
| Sysmiss | 62 |