| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 4 |
2.6%
|
|
| 4 | 13 |
8.6%
|
|
| 5 | 9 |
6%
|
|
| 6 | 21 |
13.9%
|
|
| 7 | 32 |
21.2%
|
|
| 8 | 52 |
34.4%
|
|
| 9 | 14 |
9.3%
|
|
| 10 | Very effective | 6 |
4%
|
| 11 | Don't know | 26 | |
| Sysmiss | 16 |