| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 9 |
2.1%
|
| 2 | 15 |
3.4%
|
|
| 3 | 7 |
1.6%
|
|
| 4 | 27 |
6.2%
|
|
| 5 | 27 |
6.2%
|
|
| 6 | 37 |
8.5%
|
|
| 7 | 31 |
7.1%
|
|
| 8 | 36 |
8.2%
|
|
| 9 | 30 |
6.9%
|
|
| 10 | Very effective | 71 |
16.2%
|
| 11 | Don't know | 147 |
33.6%
|
| Sysmiss | 130 |