| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 12 |
9.2%
|
| 2 | 7 |
5.3%
|
|
| 3 | 9 |
6.9%
|
|
| 4 | 15 |
11.5%
|
|
| 5 | 22 |
16.8%
|
|
| 6 | 20 |
15.3%
|
|
| 7 | 8 |
6.1%
|
|
| 8 | 26 |
19.8%
|
|
| 9 | 11 |
8.4%
|
|
| 10 | Very effective | 1 |
0.8%
|
| 11 | Don't know | 105 | |
| Sysmiss | 53 |