| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 15 |
10.7%
|
| 2 | 8 |
5.7%
|
|
| 3 | 9 |
6.4%
|
|
| 4 | 26 |
18.6%
|
|
| 5 | 18 |
12.9%
|
|
| 6 | 23 |
16.4%
|
|
| 7 | 13 |
9.3%
|
|
| 8 | 8 |
5.7%
|
|
| 9 | 6 |
4.3%
|
|
| 10 | Very effective | 14 |
10%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 117 |