| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
5.7%
|
| 2 | 2 |
5.7%
|
|
| 4 | 6 |
17.1%
|
|
| 5 | 4 |
11.4%
|
|
| 6 | 6 |
17.1%
|
|
| 7 | 8 |
22.9%
|
|
| 8 | 6 |
17.1%
|
|
| 10 | Very effective | 1 |
2.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 61 |