| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.8%
|
|
| 1 | Not effective at all | 2 |
0.8%
|
| 2 | 3 |
1.1%
|
|
| 3 | 14 |
5.3%
|
|
| 4 | 23 |
8.6%
|
|
| 5 | 36 |
13.5%
|
|
| 6 | 30 |
11.3%
|
|
| 7 | 38 |
14.3%
|
|
| 8 | 44 |
16.5%
|
|
| 9 | 29 |
10.9%
|
|
| 10 | Very effective | 29 |
10.9%
|
| 11 | Don't know | 16 |
6%
|
| Sysmiss | 5 |