| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.7%
|
| 2 | 2 |
1.3%
|
|
| 3 | 1 |
0.7%
|
|
| 4 | 6 |
4%
|
|
| 5 | 6 |
4%
|
|
| 6 | 18 |
12%
|
|
| 7 | 32 |
21.3%
|
|
| 8 | 46 |
30.7%
|
|
| 9 | 23 |
15.3%
|
|
| 10 | Very effective | 15 |
10%
|
| 11 | Don't know | 27 | |
| Sysmiss | 16 |