| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 19 |
7.1%
|
| 2 | 10 |
3.7%
|
|
| 3 | 16 |
5.9%
|
|
| 4 | 12 |
4.5%
|
|
| 5 | 30 |
11.2%
|
|
| 6 | 19 |
7.1%
|
|
| 7 | 25 |
9.3%
|
|
| 8 | 23 |
8.6%
|
|
| 9 | 17 |
6.3%
|
|
| 10 | Very effective | 37 |
13.8%
|
| 11 | Don't know | 61 |
22.7%
|
| Sysmiss | 36 |