| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
3.2%
|
| 4 | 6 |
9.7%
|
|
| 5 | 7 |
11.3%
|
|
| 6 | 7 |
11.3%
|
|
| 7 | 10 |
16.1%
|
|
| 8 | 13 |
21%
|
|
| 9 | 10 |
16.1%
|
|
| 10 | Very effective | 7 |
11.3%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 60 |