| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 6 |
3.6%
|
|
| 4 | 9 |
5.3%
|
|
| 5 | 18 |
10.7%
|
|
| 6 | 21 |
12.4%
|
|
| 7 | 45 |
26.6%
|
|
| 8 | 55 |
32.5%
|
|
| 9 | 14 |
8.3%
|
|
| 10 | Very effective | 1 |
0.6%
|
| 11 | Don't know | 174 | |
| Sysmiss | 17 |