| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 12 |
8.8%
|
| 2 | 7 |
5.1%
|
|
| 3 | 10 |
7.3%
|
|
| 4 | 8 |
5.8%
|
|
| 5 | 24 |
17.5%
|
|
| 6 | 23 |
16.8%
|
|
| 7 | 15 |
10.9%
|
|
| 8 | 28 |
20.4%
|
|
| 9 | 9 |
6.6%
|
|
| 10 | Very effective | 1 |
0.7%
|
| 11 | Don't know | 98 | |
| Sysmiss | 54 |