| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
2.4%
|
| 2 | 1 |
2.4%
|
|
| 3 | 3 |
7.1%
|
|
| 4 | 2 |
4.8%
|
|
| 5 | 11 |
26.2%
|
|
| 6 | 7 |
16.7%
|
|
| 7 | 6 |
14.3%
|
|
| 8 | 7 |
16.7%
|
|
| 9 | 3 |
7.1%
|
|
| 10 | Very effective | 1 |
2.4%
|
| 11 | Don't know | 40 | |
| Sysmiss | 24 |