| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
0.8%
|
| 2 | 12 |
2.3%
|
|
| 3 | 37 |
6.9%
|
|
| 4 | 69 |
12.9%
|
|
| 5 | 92 |
17.3%
|
|
| 6 | 104 |
19.5%
|
|
| 7 | 98 |
18.4%
|
|
| 8 | 80 |
15%
|
|
| 9 | 34 |
6.4%
|
|
| 10 | Very effective | 3 |
0.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 30 |