| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
1%
|
|
| 1 | Not effective at all | 3 |
1.5%
|
| 2 | 11 |
5.5%
|
|
| 3 | 9 |
4.5%
|
|
| 4 | 19 |
9.5%
|
|
| 5 | 25 |
12.5%
|
|
| 6 | 27 |
13.5%
|
|
| 7 | 30 |
15%
|
|
| 8 | 14 |
7%
|
|
| 9 | 12 |
6%
|
|
| 10 | Very effective | 5 |
2.5%
|
| 11 | Don't know | 43 |
21.5%
|
| Sysmiss | 25 |