| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 12 |
9.4%
|
| 2 | 9 |
7.1%
|
|
| 3 | 5 |
3.9%
|
|
| 4 | 8 |
6.3%
|
|
| 5 | 4 |
3.1%
|
|
| 6 | 8 |
6.3%
|
|
| 7 | 13 |
10.2%
|
|
| 8 | 9 |
7.1%
|
|
| 9 | 11 |
8.7%
|
|
| 10 | Very effective | 15 |
11.8%
|
| 11 | Don't know | 33 |
26%
|
| Sysmiss | 37 |