| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.3%
|
| 2 | 6 |
3.9%
|
|
| 3 | 6 |
3.9%
|
|
| 4 | 11 |
7.2%
|
|
| 5 | 20 |
13.2%
|
|
| 6 | 14 |
9.2%
|
|
| 7 | 35 |
23%
|
|
| 8 | 30 |
19.7%
|
|
| 9 | 14 |
9.2%
|
|
| 10 | Very effective | 14 |
9.2%
|
| 11 | Don't know | 3 | |
| 12 | 65 | ||
| Sysmiss | 33 |