| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.4%
|
| 2 | 6 |
4.1%
|
|
| 3 | 13 |
9%
|
|
| 4 | 10 |
6.9%
|
|
| 5 | 16 |
11%
|
|
| 6 | 15 |
10.3%
|
|
| 7 | 20 |
13.8%
|
|
| 8 | 27 |
18.6%
|
|
| 9 | 23 |
15.9%
|
|
| 10 | Very effective | 13 |
9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 248 |