| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.6%
|
| 2 | 2 | 1 |
0.8%
|
| 3 | 3 | 5 |
4%
|
| 4 | 4 | 3 |
2.4%
|
| 5 | 5 | 11 |
8.8%
|
| 6 | 6 | 11 |
8.8%
|
| 7 | 7 | 14 |
11.2%
|
| 8 | 8 | 16 |
12.8%
|
| 9 | 9 | 13 |
10.4%
|
| 10 | Very effective | 10 |
8%
|
| 11 | Don't know | 39 |
31.2%
|
| Sysmiss | 21 |