| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.8%
|
| 2 | 5 |
3%
|
|
| 3 | 16 |
9.6%
|
|
| 4 | 14 |
8.4%
|
|
| 5 | 10 |
6%
|
|
| 6 | 14 |
8.4%
|
|
| 7 | 17 |
10.2%
|
|
| 8 | 21 |
12.7%
|
|
| 9 | 25 |
15.1%
|
|
| 10 | Very effective | 27 |
16.3%
|
| 11 | Don't know | 14 |
8.4%
|
| 12 | Not applicable | 0 |
0%
|
| Sysmiss | 41 |