| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
0.6%
|
| 2 | 7 |
1.4%
|
|
| 3 | 39 |
7.7%
|
|
| 4 | 89 |
17.6%
|
|
| 5 | 75 |
14.8%
|
|
| 6 | 104 |
20.5%
|
|
| 7 | 82 |
16.2%
|
|
| 8 | 61 |
12%
|
|
| 9 | 26 |
5.1%
|
|
| 10 | Very effective | 21 |
4.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 56 |