| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 20 |
4.2%
|
| 2 | 16 |
3.4%
|
|
| 3 | 34 |
7.2%
|
|
| 4 | 51 |
10.8%
|
|
| 5 | 87 |
18.5%
|
|
| 6 | 102 |
21.7%
|
|
| 7 | 64 |
13.6%
|
|
| 8 | 42 |
8.9%
|
|
| 9 | 25 |
5.3%
|
|
| 10 | Very effective | 30 |
6.4%
|
| 11 | Don't know | 184 | |
| Sysmiss | 64 |