| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
3.6%
|
| 2 | 7 |
8.4%
|
|
| 3 | 1 |
1.2%
|
|
| 4 | 3 |
3.6%
|
|
| 5 | 11 |
13.3%
|
|
| 6 | 10 |
12%
|
|
| 7 | 18 |
21.7%
|
|
| 8 | 11 |
13.3%
|
|
| 9 | 9 |
10.8%
|
|
| 10 | Very effective | 10 |
12%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 83 |