| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1%
|
| 2 | 6 |
2%
|
|
| 3 | 16 |
5.3%
|
|
| 4 | 21 |
6.9%
|
|
| 5 | 40 |
13.2%
|
|
| 6 | 21 |
6.9%
|
|
| 7 | 19 |
6.3%
|
|
| 8 | 19 |
6.3%
|
|
| 9 | 8 |
2.6%
|
|
| 10 | Very effective | 1 |
0.3%
|
| 11 | Don't know | 149 |
49.2%
|
| Sysmiss | 65 |