| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 4 |
2.6%
|
|
| 3 | 5 |
3.3%
|
|
| 4 | 11 |
7.3%
|
|
| 5 | 26 |
17.2%
|
|
| 6 | 42 |
27.8%
|
|
| 7 | 16 |
10.6%
|
|
| 8 | 20 |
13.2%
|
|
| 9 | 17 |
11.3%
|
|
| 10 | Very effective | 10 |
6.6%
|
| 11 | Don't know | 14 | |
| Sysmiss | 38 |