| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.4%
|
| 2 | 5 |
2.4%
|
|
| 3 | 2 |
1%
|
|
| 4 | 7 |
3.3%
|
|
| 5 | 15 |
7.1%
|
|
| 6 | 8 |
3.8%
|
|
| 7 | 30 |
14.3%
|
|
| 8 | 36 |
17.1%
|
|
| 9 | 20 |
9.5%
|
|
| 10 | Very effective | 10 |
4.8%
|
| 11 | Don't know | 74 |
35.2%
|
| Sysmiss | 15 |