| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
1.3%
|
| 2 | 1 |
1.3%
|
|
| 3 | 3 |
4%
|
|
| 4 | 6 |
8%
|
|
| 5 | 12 |
16%
|
|
| 6 | 13 |
17.3%
|
|
| 7 | 19 |
25.3%
|
|
| 8 | 12 |
16%
|
|
| 9 | 7 |
9.3%
|
|
| 10 | Very effective | 1 |
1.3%
|
| 11 | Don't know | 21 | |
| Sysmiss | 8 |