| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.8%
|
| 2 | 2 |
1.2%
|
|
| 3 | 5 |
3%
|
|
| 4 | 15 |
8.9%
|
|
| 5 | 23 |
13.7%
|
|
| 6 | 21 |
12.5%
|
|
| 7 | 33 |
19.6%
|
|
| 8 | 30 |
17.9%
|
|
| 9 | 22 |
13.1%
|
|
| 10 | Very effective | 14 |
8.3%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 82 |