| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
3.1%
|
| 2 | 1 |
3.1%
|
|
| 4 | 1 |
3.1%
|
|
| 5 | 2 |
6.3%
|
|
| 6 | 10 |
31.3%
|
|
| 7 | 7 |
21.9%
|
|
| 8 | 5 |
15.6%
|
|
| 9 | 3 |
9.4%
|
|
| 10 | Very effective | 2 |
6.3%
|
| 11 | Don't know | 62 | |
| Sysmiss | 15 |