| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
2.1%
|
| 2 | 27 |
11.3%
|
|
| 3 | 40 |
16.7%
|
|
| 4 | 21 |
8.8%
|
|
| 5 | 38 |
15.9%
|
|
| 6 | 29 |
12.1%
|
|
| 7 | 16 |
6.7%
|
|
| 8 | 19 |
7.9%
|
|
| 9 | 16 |
6.7%
|
|
| 10 | Very effective | 28 |
11.7%
|
| 11 | Don't know | 51 | |
| Sysmiss | 13 |