| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 2 |
4.3%
|
|
| 3 | 2 |
4.3%
|
|
| 4 | 2 |
4.3%
|
|
| 5 | 3 |
6.5%
|
|
| 6 | 7 |
15.2%
|
|
| 7 | 8 |
17.4%
|
|
| 8 | 11 |
23.9%
|
|
| 9 | 7 |
15.2%
|
|
| 10 | Very effective | 4 |
8.7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 118 |