| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
2.4%
|
| 2 | 6 |
2.1%
|
|
| 3 | 5 |
1.7%
|
|
| 4 | 21 |
7.3%
|
|
| 5 | 18 |
6.3%
|
|
| 6 | 25 |
8.7%
|
|
| 7 | 22 |
7.7%
|
|
| 8 | 20 |
7%
|
|
| 9 | 11 |
3.8%
|
|
| 10 | Very effective | 20 |
7%
|
| 11 | Don't know | 131 |
45.8%
|
| Sysmiss | 17 |