| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 19 |
7.9%
|
| 2 | 24 |
9.9%
|
|
| 3 | 26 |
10.7%
|
|
| 4 | 24 |
9.9%
|
|
| 5 | 32 |
13.2%
|
|
| 6 | 26 |
10.7%
|
|
| 7 | 21 |
8.7%
|
|
| 8 | 19 |
7.9%
|
|
| 9 | 18 |
7.4%
|
|
| 10 | Very effective | 33 |
13.6%
|
| 11 | Don't know | 49 | |
| Sysmiss | 12 |