| Value | Category | Cases | |
|---|---|---|---|
| 1 | rather useful | 10 |
17.5%
|
| 2 | very useful | 37 |
64.9%
|
| 3 | not very useful | 2 |
3.5%
|
| 4 | not useful at all | 8 |
14%
|
| Sysmiss | 499 |