| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 17 |
3.5%
|
| 2 | 22 |
4.5%
|
|
| 3 | 29 |
5.9%
|
|
| 4 | 32 |
6.5%
|
|
| 5 | 49 |
10%
|
|
| 6 | 45 |
9.2%
|
|
| 7 | 34 |
6.9%
|
|
| 8 | 27 |
5.5%
|
|
| 9 | 24 |
4.9%
|
|
| 10 | Very effective | 54 |
11%
|
| 11 | Don't know | 157 |
32%
|
| Sysmiss | 77 |