| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
1%
|
|
| 1 | Not effective at all | 2 |
1%
|
| 2 | 1 |
0.5%
|
|
| 3 | 16 |
8%
|
|
| 4 | 12 |
6%
|
|
| 5 | 26 |
12.9%
|
|
| 6 | 16 |
8%
|
|
| 7 | 37 |
18.4%
|
|
| 8 | 22 |
10.9%
|
|
| 9 | 19 |
9.5%
|
|
| 10 | Very effective | 8 |
4%
|
| 11 | Don't know | 40 |
19.9%
|
| Sysmiss | 24 |