| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.8%
|
| 2 | 3 |
1.1%
|
|
| 3 | 7 |
2.6%
|
|
| 4 | 21 |
7.7%
|
|
| 5 | 76 |
27.7%
|
|
| 6 | 51 |
18.6%
|
|
| 7 | 41 |
15%
|
|
| 8 | 32 |
11.7%
|
|
| 9 | 22 |
8%
|
|
| 10 | Very effective | 16 |
5.8%
|
| 11 | Don't know | 32 | |
| Sysmiss | 90 |