| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.8%
|
|
| 3 | 1 |
0.8%
|
|
| 4 | 3 |
2.5%
|
|
| 5 | 15 |
12.7%
|
|
| 6 | 12 |
10.2%
|
|
| 7 | 36 |
30.5%
|
|
| 8 | 29 |
24.6%
|
|
| 9 | 13 |
11%
|
|
| 10 | Very effective | 8 |
6.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 176 |