| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.5%
|
|
| 1 | Not effective at all | 8 |
2%
|
| 2 | 8 |
2%
|
|
| 3 | 10 |
2.5%
|
|
| 4 | 16 |
4%
|
|
| 5 | 43 |
10.8%
|
|
| 6 | 30 |
7.6%
|
|
| 7 | 38 |
9.6%
|
|
| 8 | 37 |
9.3%
|
|
| 9 | 23 |
5.8%
|
|
| 10 | Very effective | 19 |
4.8%
|
| 11 | Don't know | 163 |
41.1%
|
| Sysmiss | 10 |