| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.7%
|
| 2 | 7 |
4%
|
|
| 3 | 5 |
2.8%
|
|
| 4 | 8 |
4.5%
|
|
| 5 | 10 |
5.6%
|
|
| 6 | 18 |
10.2%
|
|
| 7 | 16 |
9%
|
|
| 8 | 18 |
10.2%
|
|
| 9 | 26 |
14.7%
|
|
| 10 | Very effective | 13 |
7.3%
|
| 11 | Don't know | 53 |
29.9%
|
| Sysmiss | 3 |