| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.1%
|
| 2 | 2 |
1.1%
|
|
| 3 | 10 |
5.4%
|
|
| 4 | 9 |
4.9%
|
|
| 5 | 18 |
9.7%
|
|
| 6 | 9 |
4.9%
|
|
| 7 | 33 |
17.8%
|
|
| 8 | 37 |
20%
|
|
| 9 | 43 |
23.2%
|
|
| 10 | Very effective | 22 |
11.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 208 |