| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 262 |
32.4%
|
| 2 | Somewhat difficult | 382 |
47.3%
|
| 3 | Not difficult at all | 141 |
17.5%
|
| 4 | (DK) | 18 |
2.2%
|
| 5 | (ref) | 5 |
0.6%
|
| Sysmiss | 192 |