| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.1%
|
| 2 | 7 |
1.6%
|
|
| 3 | 7 |
1.6%
|
|
| 4 | 7 |
1.6%
|
|
| 5 | 46 |
10.4%
|
|
| 6 | 32 |
7.2%
|
|
| 7 | 40 |
9%
|
|
| 8 | 51 |
11.5%
|
|
| 9 | 28 |
6.3%
|
|
| 10 | Very effective | 90 |
20.4%
|
| 11 | Don't know | 129 |
29.2%
|
| Sysmiss | 125 |