| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 515 |
60%
|
| 2 | Somewhat difficult | 192 |
22.4%
|
| 3 | Not difficult at all | 145 |
16.9%
|
| 4 | (DK) | 6 |
0.7%
|
| 5 | (ref) | 1 |
0.1%
|
| Sysmiss | 166 |