| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 15 |
13.6%
|
| 2 | 14 |
12.7%
|
|
| 3 | 13 |
11.8%
|
|
| 4 | 16 |
14.5%
|
|
| 5 | 26 |
23.6%
|
|
| 6 | 8 |
7.3%
|
|
| 7 | 9 |
8.2%
|
|
| 8 | 4 |
3.6%
|
|
| 10 | Very effective | 5 |
4.5%
|
| 11 | Don't know | 143 | |
| Sysmiss | 73 |