| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
7.6%
|
| 2 | 15 |
11.5%
|
|
| 3 | 14 |
10.7%
|
|
| 4 | 16 |
12.2%
|
|
| 5 | 36 |
27.5%
|
|
| 6 | 13 |
9.9%
|
|
| 7 | 14 |
10.7%
|
|
| 8 | 8 |
6.1%
|
|
| 9 | 3 |
2.3%
|
|
| 10 | Very effective | 2 |
1.5%
|
| 11 | Don't know | 62 | |
| Sysmiss | 5 |