| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
2.6%
|
| 2 | 9 |
3.4%
|
|
| 3 | 20 |
7.5%
|
|
| 4 | 25 |
9.4%
|
|
| 5 | 32 |
12%
|
|
| 6 | 29 |
10.9%
|
|
| 7 | 30 |
11.2%
|
|
| 8 | 28 |
10.5%
|
|
| 9 | 7 |
2.6%
|
|
| 10 | Very effective | 24 |
9%
|
| 11 | Don't know | 56 |
21%
|
| Sysmiss | 4 |