| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 4 |
1.5%
|
|
| 4 | 8 |
3.1%
|
|
| 5 | 13 |
5%
|
|
| 6 | 20 |
7.7%
|
|
| 7 | 54 |
20.8%
|
|
| 8 | 53 |
20.4%
|
|
| 9 | 45 |
17.3%
|
|
| 10 | Very effective | 63 |
24.2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 72 |