| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.9%
|
| 2 | 5 |
1.9%
|
|
| 3 | 12 |
4.5%
|
|
| 4 | 33 |
12.3%
|
|
| 5 | 64 |
23.8%
|
|
| 6 | 40 |
14.9%
|
|
| 7 | 51 |
19%
|
|
| 8 | 28 |
10.4%
|
|
| 9 | 14 |
5.2%
|
|
| 10 | Very effective | 17 |
6.3%
|
| 11 | Don't know | 37 | |
| Sysmiss | 90 |