| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
0.5%
|
| 2 | 18 |
3%
|
|
| 3 | 29 |
4.8%
|
|
| 4 | 42 |
6.9%
|
|
| 5 | 63 |
10.3%
|
|
| 6 | 79 |
13%
|
|
| 7 | 90 |
14.8%
|
|
| 8 | 64 |
10.5%
|
|
| 9 | 43 |
7%
|
|
| 10 | Very effective | 36 |
5.9%
|
| 11 | Don't know | 143 |
23.4%
|
| Sysmiss | 14 |