| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 5 |
5.2%
|
|
| 3 | 7 |
7.2%
|
|
| 4 | 9 |
9.3%
|
|
| 5 | 16 |
16.5%
|
|
| 6 | 16 |
16.5%
|
|
| 7 | 13 |
13.4%
|
|
| 8 | 21 |
21.6%
|
|
| 9 | 6 |
6.2%
|
|
| 10 | Very effective | 4 |
4.1%
|
| 11 | Don't know | 68 | |
| Sysmiss | 29 |