| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.1%
|
| 2 | 2 |
1%
|
|
| 3 | 8 |
4.1%
|
|
| 4 | 8 |
4.1%
|
|
| 5 | 18 |
9.3%
|
|
| 6 | 20 |
10.4%
|
|
| 7 | 19 |
9.8%
|
|
| 8 | 22 |
11.4%
|
|
| 9 | 11 |
5.7%
|
|
| 10 | Very effective | 17 |
8.8%
|
| 11 | Don't know | 64 |
33.2%
|
| Sysmiss | 8 |