| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.9%
|
| 2 | 2 |
0.9%
|
|
| 4 | 9 |
4%
|
|
| 5 | 14 |
6.2%
|
|
| 6 | 19 |
8.4%
|
|
| 7 | 13 |
5.7%
|
|
| 8 | 29 |
12.8%
|
|
| 9 | 10 |
4.4%
|
|
| 10 | Very effective | 13 |
5.7%
|
| 11 | Don't know | 116 |
51.1%
|
| Sysmiss | 8 |