| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
4.8%
|
| 2 | 1 |
1.6%
|
|
| 3 | 5 |
7.9%
|
|
| 4 | 9 |
14.3%
|
|
| 5 | 13 |
20.6%
|
|
| 6 | 1 |
1.6%
|
|
| 7 | 10 |
15.9%
|
|
| 8 | 9 |
14.3%
|
|
| 9 | 7 |
11.1%
|
|
| 10 | Very effective | 5 |
7.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 143 |