| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
6.5%
|
| 2 | 13 |
10.5%
|
|
| 3 | 13 |
10.5%
|
|
| 4 | 21 |
16.9%
|
|
| 5 | 19 |
15.3%
|
|
| 6 | 16 |
12.9%
|
|
| 7 | 17 |
13.7%
|
|
| 8 | 11 |
8.9%
|
|
| 9 | 4 |
3.2%
|
|
| 10 | Very effective | 2 |
1.6%
|
| 11 | Don't know | 69 | |
| Sysmiss | 5 |