| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1%
|
| 2 | 17 |
5.6%
|
|
| 3 | 14 |
4.6%
|
|
| 4 | 21 |
6.9%
|
|
| 5 | 35 |
11.5%
|
|
| 6 | 60 |
19.7%
|
|
| 7 | 57 |
18.8%
|
|
| 8 | 40 |
13.2%
|
|
| 9 | 31 |
10.2%
|
|
| 10 | Very effective | 26 |
8.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 136 |