| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
4.3%
|
| 2 | 1 |
2.1%
|
|
| 4 | 2 |
4.3%
|
|
| 5 | 6 |
12.8%
|
|
| 6 | 7 |
14.9%
|
|
| 7 | 10 |
21.3%
|
|
| 8 | 5 |
10.6%
|
|
| 9 | 6 |
12.8%
|
|
| 10 | Very effective | 8 |
17%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 62 |