| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
4.3%
|
| 2 | 3 |
1.3%
|
|
| 3 | 10 |
4.3%
|
|
| 4 | 13 |
5.6%
|
|
| 5 | 23 |
9.9%
|
|
| 6 | 27 |
11.6%
|
|
| 7 | 33 |
14.2%
|
|
| 8 | 45 |
19.4%
|
|
| 9 | 40 |
17.2%
|
|
| 10 | Very effective | 28 |
12.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 159 |