| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Very much difficult | 41 |
22.8%
|
| 2 | Moderately difficult | 85 |
47.2%
|
| 3 | Somewhat difficult | 30 |
16.7%
|
| 4 | Not difficult at all | 24 |
13.3%
|
| Sysmiss | 767 |