| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
1.7%
|
| 2 | 2 |
3.4%
|
|
| 3 | 5 |
8.6%
|
|
| 4 | 6 |
10.3%
|
|
| 5 | 11 |
19%
|
|
| 6 | 10 |
17.2%
|
|
| 7 | 12 |
20.7%
|
|
| 8 | 5 |
8.6%
|
|
| 9 | 4 |
6.9%
|
|
| 10 | Very effective | 2 |
3.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 64 |