| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.2%
|
| 2 | 6 |
3.6%
|
|
| 3 | 4 |
2.4%
|
|
| 4 | 5 |
3%
|
|
| 5 | 22 |
13%
|
|
| 6 | 9 |
5.3%
|
|
| 7 | 17 |
10.1%
|
|
| 8 | 21 |
12.4%
|
|
| 9 | 5 |
3%
|
|
| 10 | Very effective | 4 |
2.4%
|
| 11 | Don't know | 74 |
43.8%
|
| Sysmiss | 17 |