| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.1%
|
| 2 | 2 |
1.1%
|
|
| 3 | 3 |
1.7%
|
|
| 4 | 15 |
8.6%
|
|
| 5 | 15 |
8.6%
|
|
| 6 | 32 |
18.4%
|
|
| 7 | 24 |
13.8%
|
|
| 8 | 38 |
21.8%
|
|
| 9 | 27 |
15.5%
|
|
| 10 | Very effective | 16 |
9.2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 76 |