| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.7%
|
| 2 | 7 |
2.4%
|
|
| 3 | 14 |
4.8%
|
|
| 4 | 27 |
9.3%
|
|
| 5 | 53 |
18.3%
|
|
| 6 | 54 |
18.7%
|
|
| 7 | 59 |
20.4%
|
|
| 8 | 42 |
14.5%
|
|
| 9 | 21 |
7.3%
|
|
| 10 | Very effective | 7 |
2.4%
|
| 11 | Don't know | 67 | |
| Sysmiss | 10 |