| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
2.2%
|
| 3 | 3 |
6.5%
|
|
| 4 | 1 |
2.2%
|
|
| 5 | 5 |
10.9%
|
|
| 6 | 6 |
13%
|
|
| 7 | 11 |
23.9%
|
|
| 8 | 8 |
17.4%
|
|
| 9 | 4 |
8.7%
|
|
| 10 | Very effective | 7 |
15.2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 61 |