| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
2.3%
|
| 2 | 6 |
2.8%
|
|
| 3 | 9 |
4.2%
|
|
| 4 | 11 |
5.1%
|
|
| 5 | 15 |
7%
|
|
| 6 | 19 |
8.8%
|
|
| 7 | 35 |
16.3%
|
|
| 8 | 55 |
25.6%
|
|
| 9 | 39 |
18.1%
|
|
| 10 | Very effective | 21 |
9.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 178 |