| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.4%
|
| 2 | 6 |
2%
|
|
| 3 | 10 |
3.4%
|
|
| 4 | 22 |
7.5%
|
|
| 5 | 53 |
18.1%
|
|
| 6 | 44 |
15%
|
|
| 7 | 25 |
8.5%
|
|
| 8 | 21 |
7.2%
|
|
| 9 | 7 |
2.4%
|
|
| 10 | Very effective | 8 |
2.7%
|
| 11 | Don't know | 93 |
31.7%
|
| Sysmiss | 8 |