| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
10.5%
|
| 2 | 2 |
2.1%
|
|
| 3 | 3 |
3.2%
|
|
| 4 | 4 |
4.2%
|
|
| 5 | 11 |
11.6%
|
|
| 6 | 5 |
5.3%
|
|
| 7 | 6 |
6.3%
|
|
| 8 | 11 |
11.6%
|
|
| 9 | 11 |
11.6%
|
|
| 10 | Very effective | 8 |
8.4%
|
| 11 | Don't know | 24 |
25.3%
|
| Sysmiss | 69 |