| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
0.9%
|
| 2 | 11 |
2.1%
|
|
| 3 | 40 |
7.5%
|
|
| 4 | 76 |
14.3%
|
|
| 5 | 115 |
21.6%
|
|
| 6 | 103 |
19.3%
|
|
| 7 | 83 |
15.6%
|
|
| 8 | 67 |
12.6%
|
|
| 9 | 27 |
5.1%
|
|
| 10 | Very effective | 6 |
1.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 30 |