| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
1.1%
|
| 3 | 4 |
4.5%
|
|
| 4 | 6 |
6.8%
|
|
| 5 | 10 |
11.4%
|
|
| 6 | 10 |
11.4%
|
|
| 7 | 17 |
19.3%
|
|
| 8 | 25 |
28.4%
|
|
| 9 | 15 |
17%
|
|
| 10 | Very effective | 0 |
0%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 74 |