| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
8.1%
|
| 2 | 12 |
9.8%
|
|
| 3 | 16 |
13%
|
|
| 4 | 16 |
13%
|
|
| 5 | 27 |
22%
|
|
| 6 | 18 |
14.6%
|
|
| 7 | 12 |
9.8%
|
|
| 8 | 7 |
5.7%
|
|
| 9 | 3 |
2.4%
|
|
| 10 | Very effective | 2 |
1.6%
|
| 11 | Don't know | 70 | |
| Sysmiss | 5 |