| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 17 |
4.8%
|
| 2 | 4 |
1.1%
|
|
| 3 | 20 |
5.7%
|
|
| 4 | 18 |
5.1%
|
|
| 5 | 34 |
9.7%
|
|
| 6 | 49 |
13.9%
|
|
| 7 | 39 |
11.1%
|
|
| 8 | 41 |
11.6%
|
|
| 9 | 35 |
9.9%
|
|
| 10 | Very effective | 95 |
27%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 153 |