| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 4 | 7 |
11.7%
|
|
| 5 | 4 |
6.7%
|
|
| 6 | 9 |
15%
|
|
| 7 | 18 |
30%
|
|
| 8 | 13 |
21.7%
|
|
| 9 | 7 |
11.7%
|
|
| 10 | Very effective | 2 |
3.3%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 81 |