| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 20 |
3.2%
|
| 2 | 28 |
4.5%
|
|
| 3 | 16 |
2.6%
|
|
| 4 | 19 |
3.1%
|
|
| 5 | 69 |
11.2%
|
|
| 6 | 47 |
7.6%
|
|
| 7 | 92 |
14.9%
|
|
| 8 | 78 |
12.6%
|
|
| 9 | 47 |
7.6%
|
|
| 10 | Very effective | 34 |
5.5%
|
| 11 | Don't know | 167 |
27.1%
|
| Sysmiss | 7 |