| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.3%
|
| 2 | 12 |
6.8%
|
|
| 3 | 14 |
8%
|
|
| 4 | 7 |
4%
|
|
| 5 | 17 |
9.7%
|
|
| 6 | 18 |
10.2%
|
|
| 7 | 21 |
11.9%
|
|
| 8 | 13 |
7.4%
|
|
| 9 | 4 |
2.3%
|
|
| 10 | Very effective | 2 |
1.1%
|
| 11 | Don't know | 64 |
36.4%
|
| Sysmiss | 4 |