| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.9%
|
|
| 1 | Not effective at all | 2 |
0.9%
|
| 2 | 1 |
0.5%
|
|
| 3 | 0 |
0%
|
|
| 4 | 15 |
7%
|
|
| 5 | 9 |
4.2%
|
|
| 6 | 16 |
7.4%
|
|
| 7 | 23 |
10.7%
|
|
| 8 | 42 |
19.5%
|
|
| 9 | 19 |
8.8%
|
|
| 10 | Very effective | 29 |
13.5%
|
| 11 | Don't know | 57 |
26.5%
|
| Sysmiss | 5 |