| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.6%
|
| 2 | 4 |
2.1%
|
|
| 3 | 9 |
4.7%
|
|
| 4 | 2 |
1.1%
|
|
| 5 | 15 |
7.9%
|
|
| 6 | 14 |
7.4%
|
|
| 7 | 16 |
8.4%
|
|
| 8 | 25 |
13.2%
|
|
| 9 | 9 |
4.7%
|
|
| 10 | Very effective | 14 |
7.4%
|
| 11 | Don't know | 79 |
41.6%
|
| Sysmiss | 11 |