| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.2%
|
| 2 | 10 |
2.3%
|
|
| 3 | 19 |
4.4%
|
|
| 4 | 25 |
5.8%
|
|
| 5 | 39 |
9%
|
|
| 6 | 45 |
10.4%
|
|
| 7 | 44 |
10.2%
|
|
| 8 | 97 |
22.5%
|
|
| 9 | 71 |
16.4%
|
|
| 10 | Very effective | 77 |
17.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 43 |