| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
2%
|
| 2 | 11 |
2.2%
|
|
| 3 | 16 |
3.2%
|
|
| 4 | 40 |
8%
|
|
| 5 | 86 |
17.3%
|
|
| 6 | 110 |
22.1%
|
|
| 7 | 65 |
13.1%
|
|
| 8 | 64 |
12.9%
|
|
| 9 | 41 |
8.2%
|
|
| 10 | Very effective | 54 |
10.9%
|
| 11 | Don't know | 160 | |
| Sysmiss | 62 |