| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.8%
|
| 2 | 1 |
0.7%
|
|
| 3 | 7 |
4.9%
|
|
| 4 | 6 |
4.2%
|
|
| 5 | 4 |
2.8%
|
|
| 6 | 8 |
5.6%
|
|
| 7 | 18 |
12.7%
|
|
| 8 | 28 |
19.7%
|
|
| 9 | 10 |
7%
|
|
| 10 | Very effective | 12 |
8.5%
|
| 11 | Don't know | 44 |
31%
|
| Sysmiss | 15 |