| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
2.3%
|
| 2 | 4 |
0.9%
|
|
| 3 | 10 |
2.3%
|
|
| 4 | 18 |
4.2%
|
|
| 5 | 25 |
5.8%
|
|
| 6 | 30 |
7%
|
|
| 7 | 38 |
8.8%
|
|
| 8 | 43 |
10%
|
|
| 9 | 29 |
6.7%
|
|
| 10 | Very effective | 53 |
12.3%
|
| 11 | Don't know | 171 |
39.7%
|
| Sysmiss | 136 |