| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
4.8%
|
| 2 | 7 |
6.7%
|
|
| 3 | 17 |
16.2%
|
|
| 4 | 18 |
17.1%
|
|
| 5 | 12 |
11.4%
|
|
| 6 | 13 |
12.4%
|
|
| 7 | 13 |
12.4%
|
|
| 8 | 10 |
9.5%
|
|
| 9 | 8 |
7.6%
|
|
| 10 | Very effective | 2 |
1.9%
|
| 11 | Don't know | 88 | |
| Sysmiss | 29 |