| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.1%
|
| 2 | 7 |
1.9%
|
|
| 3 | 30 |
8.3%
|
|
| 4 | 29 |
8.1%
|
|
| 5 | 43 |
11.9%
|
|
| 6 | 42 |
11.7%
|
|
| 7 | 65 |
18.1%
|
|
| 8 | 71 |
19.7%
|
|
| 9 | 33 |
9.2%
|
|
| 10 | Very effective | 36 |
10%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 115 |