| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
5.3%
|
| 3 | 11 |
11.6%
|
|
| 4 | 11 |
11.6%
|
|
| 5 | 20 |
21.1%
|
|
| 6 | 11 |
11.6%
|
|
| 7 | 12 |
12.6%
|
|
| 8 | 13 |
13.7%
|
|
| 9 | 7 |
7.4%
|
|
| 10 | Very effective | 5 |
5.3%
|
| 11 | Don't know | 79 | |
| Sysmiss | 19 |