| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.6%
|
| 2 | 6 |
4.7%
|
|
| 3 | 7 |
5.5%
|
|
| 4 | 11 |
8.7%
|
|
| 5 | 11 |
8.7%
|
|
| 6 | 16 |
12.6%
|
|
| 7 | 32 |
25.2%
|
|
| 8 | 24 |
18.9%
|
|
| 9 | 14 |
11%
|
|
| 10 | Very effective | 4 |
3.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 83 |