| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not useful at all | 5 |
4.5%
|
| 2 | 5 |
4.5%
|
|
| 3 | 5 |
4.5%
|
|
| 4 | 6 |
5.4%
|
|
| 5 | 11 |
9.9%
|
|
| 6 | 8 |
7.2%
|
|
| 7 | 10 |
9%
|
|
| 8 | 21 |
18.9%
|
|
| 9 | 5 |
4.5%
|
|
| 10 | Very useful | 35 |
31.5%
|
| 11 | 102 | ||
| Sysmiss | 14 |