| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.6%
|
| 2 | 6 |
4.3%
|
|
| 3 | 5 |
3.6%
|
|
| 4 | 5 |
3.6%
|
|
| 5 | 27 |
19.3%
|
|
| 6 | 21 |
15%
|
|
| 7 | 23 |
16.4%
|
|
| 8 | 25 |
17.9%
|
|
| 9 | 18 |
12.9%
|
|
| 10 | Very effective | 5 |
3.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 60 |