| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
1.8%
|
| 2 | 16 |
4.1%
|
|
| 3 | 20 |
5.1%
|
|
| 4 | 30 |
7.7%
|
|
| 5 | 42 |
10.7%
|
|
| 6 | 53 |
13.5%
|
|
| 7 | 64 |
16.3%
|
|
| 8 | 66 |
16.8%
|
|
| 9 | 35 |
8.9%
|
|
| 10 | Very effective | 59 |
15.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 83 |