| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.6%
|
|
| 1 | Not effective at all | 3 |
0.9%
|
| 2 | 3 |
0.9%
|
|
| 3 | 8 |
2.4%
|
|
| 4 | 9 |
2.7%
|
|
| 5 | 21 |
6.3%
|
|
| 6 | 36 |
10.7%
|
|
| 7 | 54 |
16.1%
|
|
| 8 | 63 |
18.8%
|
|
| 9 | 27 |
8.1%
|
|
| 10 | Very effective | 10 |
3%
|
| 11 | Don't know | 99 |
29.6%
|
| Sysmiss | 5 |