| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
1.8%
|
| 2 | 7 |
1.6%
|
|
| 3 | 13 |
3%
|
|
| 4 | 20 |
4.6%
|
|
| 5 | 39 |
8.9%
|
|
| 6 | 37 |
8.4%
|
|
| 7 | 41 |
9.4%
|
|
| 8 | 59 |
13.5%
|
|
| 9 | 33 |
7.5%
|
|
| 10 | Very effective | 94 |
21.5%
|
| 11 | Don't know | 87 |
19.9%
|
| Sysmiss | 129 |