| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.9%
|
|
| 1 | Not effective at all | 5 |
2.2%
|
| 2 | 7 |
3.1%
|
|
| 3 | 6 |
2.6%
|
|
| 4 | 17 |
7.5%
|
|
| 5 | 24 |
10.6%
|
|
| 6 | 26 |
11.5%
|
|
| 7 | 30 |
13.2%
|
|
| 8 | 14 |
6.2%
|
|
| 9 | 13 |
5.7%
|
|
| 10 | Very effective | 9 |
4%
|
| 11 | Don't know | 74 |
32.6%
|
| Sysmiss | 17 |