| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 12 |
2.6%
|
| 2 | 12 |
2.6%
|
|
| 3 | 11 |
2.3%
|
|
| 4 | 20 |
4.3%
|
|
| 5 | 47 |
10%
|
|
| 6 | 51 |
10.9%
|
|
| 7 | 55 |
11.7%
|
|
| 8 | 56 |
11.9%
|
|
| 9 | 41 |
8.7%
|
|
| 10 | Very effective | 91 |
19.4%
|
| 11 | Don't know | 74 |
15.7%
|
| Sysmiss | 97 |