| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
1.2%
|
|
| 3 | 3 |
3.5%
|
|
| 4 | 3 |
3.5%
|
|
| 5 | 6 |
7.1%
|
|
| 6 | 16 |
18.8%
|
|
| 7 | 28 |
32.9%
|
|
| 8 | 15 |
17.6%
|
|
| 9 | 10 |
11.8%
|
|
| 10 | Very effective | 3 |
3.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 62 |