| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.1%
|
| 2 | 1 |
1%
|
|
| 3 | 2 |
2.1%
|
|
| 4 | 6 |
6.3%
|
|
| 5 | 8 |
8.3%
|
|
| 6 | 4 |
4.2%
|
|
| 7 | 18 |
18.8%
|
|
| 8 | 25 |
26%
|
|
| 9 | 17 |
17.7%
|
|
| 10 | Very effective | 13 |
13.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 70 |