| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
6.1%
|
| 2 | 9 |
4.2%
|
|
| 3 | 14 |
6.6%
|
|
| 4 | 16 |
7.5%
|
|
| 5 | 22 |
10.4%
|
|
| 6 | 16 |
7.5%
|
|
| 7 | 32 |
15.1%
|
|
| 8 | 26 |
12.3%
|
|
| 9 | 29 |
13.7%
|
|
| 10 | Very effective | 35 |
16.5%
|
| 11 | Don't know | 60 | |
| Sysmiss | 47 |