| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.7%
|
| 2 | 9 |
3.1%
|
|
| 3 | 8 |
2.8%
|
|
| 4 | 5 |
1.7%
|
|
| 5 | 26 |
9%
|
|
| 6 | 17 |
5.9%
|
|
| 7 | 35 |
12.2%
|
|
| 8 | 25 |
8.7%
|
|
| 9 | 11 |
3.8%
|
|
| 10 | Very effective | 6 |
2.1%
|
| 11 | Don't know | 144 |
50%
|
| Sysmiss | 14 |