| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
7.6%
|
| 2 | 5 |
2.9%
|
|
| 3 | 19 |
11.2%
|
|
| 4 | 17 |
10%
|
|
| 5 | 18 |
10.6%
|
|
| 6 | 20 |
11.8%
|
|
| 7 | 10 |
5.9%
|
|
| 8 | 19 |
11.2%
|
|
| 9 | 17 |
10%
|
|
| 10 | Very effective | 32 |
18.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 87 |