| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.4%
|
| 2 | 4 |
1.8%
|
|
| 3 | 5 |
2.3%
|
|
| 4 | 18 |
8.1%
|
|
| 5 | 17 |
7.7%
|
|
| 6 | 23 |
10.4%
|
|
| 7 | 23 |
10.4%
|
|
| 8 | 23 |
10.4%
|
|
| 9 | 11 |
5%
|
|
| 10 | Very effective | 10 |
4.5%
|
| 11 | Don't know | 85 |
38.3%
|
| Sysmiss | 15 |