| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.6%
|
| 2 | 2 |
1%
|
|
| 3 | 5 |
2.6%
|
|
| 4 | 3 |
1.6%
|
|
| 5 | 11 |
5.8%
|
|
| 6 | 10 |
5.2%
|
|
| 7 | 16 |
8.4%
|
|
| 8 | 28 |
14.7%
|
|
| 9 | 11 |
5.8%
|
|
| 10 | Very effective | 9 |
4.7%
|
| 11 | Don't know | 93 |
48.7%
|
| Sysmiss | 10 |