| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
2.8%
|
| 2 | 6 |
2.8%
|
|
| 3 | 6 |
2.8%
|
|
| 4 | 9 |
4.2%
|
|
| 5 | 17 |
7.9%
|
|
| 6 | 15 |
7%
|
|
| 7 | 22 |
10.3%
|
|
| 8 | 20 |
9.3%
|
|
| 9 | 13 |
6.1%
|
|
| 10 | Very effective | 9 |
4.2%
|
| 11 | Don't know | 91 |
42.5%
|
| Sysmiss | 11 |