| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.3%
|
| 2 | 2 |
0.6%
|
|
| 3 | 3 |
0.9%
|
|
| 4 | 7 |
2.2%
|
|
| 5 | 25 |
7.7%
|
|
| 6 | 32 |
9.8%
|
|
| 7 | 50 |
15.4%
|
|
| 8 | 51 |
15.7%
|
|
| 9 | 60 |
18.5%
|
|
| 10 | Very effective | 79 |
24.3%
|
| 11 | 15 |
4.6%
|
|
| Sysmiss | 2 |