| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 19 |
4.4%
|
| 2 | 16 |
3.7%
|
|
| 3 | 18 |
4.2%
|
|
| 4 | 26 |
6%
|
|
| 5 | 41 |
9.5%
|
|
| 6 | 22 |
5.1%
|
|
| 7 | 25 |
5.8%
|
|
| 8 | 34 |
7.9%
|
|
| 9 | 18 |
4.2%
|
|
| 10 | Very effective | 58 |
13.5%
|
| 11 | Don't know | 154 |
35.7%
|
| Sysmiss | 136 |