| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 19 |
10.9%
|
| 2 | 8 |
4.6%
|
|
| 3 | 10 |
5.7%
|
|
| 4 | 13 |
7.5%
|
|
| 5 | 23 |
13.2%
|
|
| 6 | 24 |
13.8%
|
|
| 7 | 19 |
10.9%
|
|
| 8 | 16 |
9.2%
|
|
| 9 | 8 |
4.6%
|
|
| 10 | Very effective | 34 |
19.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 168 |