| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.1%
|
| 2 | 10 |
3.8%
|
|
| 3 | 19 |
7.3%
|
|
| 4 | 33 |
12.6%
|
|
| 5 | 30 |
11.5%
|
|
| 6 | 66 |
25.2%
|
|
| 7 | 47 |
17.9%
|
|
| 8 | 32 |
12.2%
|
|
| 9 | 14 |
5.3%
|
|
| 10 | Very effective | 8 |
3.1%
|
| 11 | Don't know | 90 | |
| Sysmiss | 14 |