| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
4.9%
|
| 2 | 2 |
2.4%
|
|
| 3 | 4 |
4.9%
|
|
| 4 | 1 |
1.2%
|
|
| 5 | 11 |
13.4%
|
|
| 6 | 16 |
19.5%
|
|
| 7 | 14 |
17.1%
|
|
| 8 | 12 |
14.6%
|
|
| 9 | 7 |
8.5%
|
|
| 10 | Very effective | 11 |
13.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 84 |