| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
2.3%
|
| 2 | 5 |
2.3%
|
|
| 3 | 16 |
7.4%
|
|
| 4 | 12 |
5.6%
|
|
| 5 | 38 |
17.6%
|
|
| 6 | 21 |
9.7%
|
|
| 7 | 36 |
16.7%
|
|
| 8 | 34 |
15.7%
|
|
| 9 | 18 |
8.3%
|
|
| 10 | Very effective | 31 |
14.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 44 |