| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.3%
|
|
| 3 | 5 |
1.3%
|
|
| 4 | 3 |
0.8%
|
|
| 5 | 21 |
5.6%
|
|
| 6 | 33 |
8.8%
|
|
| 7 | 82 |
21.8%
|
|
| 8 | 112 |
29.7%
|
|
| 9 | 70 |
18.6%
|
|
| 10 | Very effective | 50 |
13.3%
|
| -99 | 21 | ||
| 11 | Don't know | 145 | |
| Sysmiss | 37 |