| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
5.2%
|
| 2 | 3 |
3.1%
|
|
| 3 | 10 |
10.4%
|
|
| 4 | 6 |
6.3%
|
|
| 5 | 9 |
9.4%
|
|
| 6 | 18 |
18.8%
|
|
| 7 | 21 |
21.9%
|
|
| 8 | 12 |
12.5%
|
|
| 9 | 6 |
6.3%
|
|
| 10 | Very effective | 6 |
6.3%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 158 |