| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
2.2%
|
| 2 | 8 |
2.2%
|
|
| 3 | 27 |
7.4%
|
|
| 4 | 31 |
8.5%
|
|
| 5 | 58 |
16%
|
|
| 6 | 59 |
16.3%
|
|
| 7 | 59 |
16.3%
|
|
| 8 | 49 |
13.5%
|
|
| 9 | 33 |
9.1%
|
|
| 10 | Very effective | 31 |
8.5%
|
| 11 | Don't know | 45 | |
| Sysmiss | 13 |