| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
2.4%
|
| 2 | 8 |
6.4%
|
|
| 3 | 14 |
11.2%
|
|
| 4 | 20 |
16%
|
|
| 5 | 29 |
23.2%
|
|
| 6 | 21 |
16.8%
|
|
| 7 | 18 |
14.4%
|
|
| 8 | 7 |
5.6%
|
|
| 9 | 4 |
3.2%
|
|
| 10 | Very effective | 1 |
0.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 71 |