| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.2%
|
| 3 | 9 |
3.5%
|
|
| 4 | 17 |
6.6%
|
|
| 5 | 61 |
23.6%
|
|
| 6 | 46 |
17.8%
|
|
| 7 | 47 |
18.1%
|
|
| 8 | 33 |
12.7%
|
|
| 9 | 28 |
10.8%
|
|
| 10 | Very effective | 15 |
5.8%
|
| 11 | Don't know | 50 | |
| Sysmiss | 87 |