| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 4 | 6 |
4.7%
|
|
| 5 | 8 |
6.3%
|
|
| 6 | 12 |
9.4%
|
|
| 7 | 22 |
17.3%
|
|
| 8 | 39 |
30.7%
|
|
| 9 | 26 |
20.5%
|
|
| 10 | Very effective | 14 |
11%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 11 |