| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
3.1%
|
| 2 | 6 |
6.2%
|
|
| 3 | 7 |
7.2%
|
|
| 4 | 10 |
10.3%
|
|
| 5 | 22 |
22.7%
|
|
| 6 | 20 |
20.6%
|
|
| 7 | 8 |
8.2%
|
|
| 8 | 11 |
11.3%
|
|
| 9 | 6 |
6.2%
|
|
| 10 | Very effective | 4 |
4.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 94 |