| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 15 |
5.5%
|
| 2 | 4 |
1.5%
|
|
| 3 | 11 |
4%
|
|
| 4 | 25 |
9.1%
|
|
| 5 | 47 |
17.2%
|
|
| 6 | 40 |
14.6%
|
|
| 7 | 36 |
13.1%
|
|
| 8 | 41 |
15%
|
|
| 9 | 11 |
4%
|
|
| 10 | Very effective | 44 |
16.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 231 |