| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.6%
|
| 2 | 1 |
0.8%
|
|
| 3 | 7 |
5.6%
|
|
| 4 | 15 |
12.1%
|
|
| 5 | 19 |
15.3%
|
|
| 6 | 11 |
8.9%
|
|
| 7 | 31 |
25%
|
|
| 8 | 24 |
19.4%
|
|
| 9 | 5 |
4%
|
|
| 10 | Very effective | 9 |
7.3%
|
| 11 | Don't know | 67 | |
| Sysmiss | 31 |