| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.7%
|
| 2 | 5 |
2.1%
|
|
| 3 | 22 |
9.2%
|
|
| 4 | 21 |
8.8%
|
|
| 5 | 56 |
23.5%
|
|
| 6 | 50 |
21%
|
|
| 7 | 23 |
9.7%
|
|
| 8 | 26 |
10.9%
|
|
| 9 | 10 |
4.2%
|
|
| 10 | Very effective | 21 |
8.8%
|
| 11 | Don't know | 67 | |
| Sysmiss | 91 |