| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
4.5%
|
| 2 | 3 |
4.5%
|
|
| 3 | 2 |
3%
|
|
| 4 | 3 |
4.5%
|
|
| 5 | 16 |
24.2%
|
|
| 6 | 10 |
15.2%
|
|
| 7 | 11 |
16.7%
|
|
| 8 | 10 |
15.2%
|
|
| 9 | 6 |
9.1%
|
|
| 10 | Very effective | 2 |
3%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 81 |