| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
2.5%
|
| 2 | 12 |
2.3%
|
|
| 3 | 29 |
5.5%
|
|
| 4 | 37 |
7%
|
|
| 5 | 70 |
13.2%
|
|
| 6 | 88 |
16.6%
|
|
| 7 | 86 |
16.2%
|
|
| 8 | 91 |
17.2%
|
|
| 9 | 51 |
9.6%
|
|
| 10 | Very effective | 53 |
10%
|
| 11 | Don't know | 125 | |
| Sysmiss | 64 |