| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
3.2%
|
| 2 | 5 |
4%
|
|
| 3 | 15 |
11.9%
|
|
| 4 | 14 |
11.1%
|
|
| 5 | 17 |
13.5%
|
|
| 6 | 16 |
12.7%
|
|
| 7 | 21 |
16.7%
|
|
| 8 | 19 |
15.1%
|
|
| 9 | 10 |
7.9%
|
|
| 10 | Very effective | 5 |
4%
|
| 11 | Don't know | 111 | |
| Sysmiss | 32 |