| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
1.8%
|
| 2 | 3 |
0.7%
|
|
| 3 | 10 |
2.2%
|
|
| 4 | 21 |
4.7%
|
|
| 5 | 41 |
9.1%
|
|
| 6 | 44 |
9.8%
|
|
| 7 | 32 |
7.1%
|
|
| 8 | 34 |
7.6%
|
|
| 9 | 29 |
6.5%
|
|
| 10 | Very effective | 65 |
14.5%
|
| 11 | Don't know | 162 |
36.1%
|
| Sysmiss | 118 |