| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.4%
|
| 2 | 9 |
5.3%
|
|
| 3 | 13 |
7.6%
|
|
| 4 | 17 |
10%
|
|
| 5 | 24 |
14.1%
|
|
| 6 | 21 |
12.4%
|
|
| 7 | 31 |
18.2%
|
|
| 8 | 31 |
18.2%
|
|
| 9 | 11 |
6.5%
|
|
| 10 | Very effective | 9 |
5.3%
|
| 11 | Don't know | 50 | |
| Sysmiss | 42 |