| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.2%
|
| 2 | 1 |
0.2%
|
|
| 3 | 3 |
0.7%
|
|
| 4 | 15 |
3.4%
|
|
| 5 | 19 |
4.3%
|
|
| 6 | 31 |
7%
|
|
| 7 | 59 |
13.3%
|
|
| 8 | 65 |
14.7%
|
|
| 9 | 25 |
5.6%
|
|
| 10 | Very effective | 9 |
2%
|
| 11 | Don't know | 0 |
0%
|
| NA | 215 |
48.5%
|