| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.5%
|
| 2 | 7 |
3.6%
|
|
| 3 | 6 |
3.1%
|
|
| 4 | 14 |
7.3%
|
|
| 5 | 31 |
16.1%
|
|
| 6 | 29 |
15.1%
|
|
| 7 | 62 |
32.3%
|
|
| 8 | 27 |
14.1%
|
|
| 9 | 8 |
4.2%
|
|
| 10 | Very effective | 7 |
3.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 102 |