| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
7.7%
|
| 2 | 10 |
9.6%
|
|
| 3 | 8 |
7.7%
|
|
| 4 | 6 |
5.8%
|
|
| 5 | 13 |
12.5%
|
|
| 6 | 17 |
16.3%
|
|
| 7 | 14 |
13.5%
|
|
| 8 | 20 |
19.2%
|
|
| 9 | 2 |
1.9%
|
|
| 10 | Very effective | 6 |
5.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 150 |