| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 214 |
25.3%
|
| 2 | Somewhat difficult | 319 |
37.7%
|
| 3 | Not difficult at all | 301 |
35.5%
|
| 4 | (DK) | 12 |
1.4%
|
| 5 | (ref) | 1 |
0.1%
|
| Sysmiss | 153 |