| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
1.7%
|
| 2 | 6 |
1.3%
|
|
| 3 | 35 |
7.5%
|
|
| 4 | 39 |
8.4%
|
|
| 5 | 86 |
18.5%
|
|
| 6 | 74 |
15.9%
|
|
| 7 | 81 |
17.5%
|
|
| 8 | 64 |
13.8%
|
|
| 9 | 49 |
10.6%
|
|
| 10 | Very effective | 22 |
4.7%
|
| 11 | Don't know | 190 | |
| Sysmiss | 65 |