| Value | Category | Cases | |
|---|---|---|---|
| -99 | 4 |
1.5%
|
|
| 1 | Not effective at all | 2 |
0.7%
|
| 2 | 6 |
2.2%
|
|
| 3 | 7 |
2.6%
|
|
| 4 | 14 |
5.2%
|
|
| 5 | 27 |
10%
|
|
| 6 | 18 |
6.7%
|
|
| 7 | 26 |
9.6%
|
|
| 8 | 44 |
16.3%
|
|
| 9 | 22 |
8.1%
|
|
| 10 | Very effective | 21 |
7.8%
|
| 11 | Don't know | 79 |
29.3%
|
| Sysmiss | 9 |