| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.8%
|
| 2 | 2 |
0.7%
|
|
| 3 | 9 |
3.2%
|
|
| 4 | 17 |
6%
|
|
| 5 | 25 |
8.8%
|
|
| 6 | 21 |
7.4%
|
|
| 7 | 25 |
8.8%
|
|
| 8 | 19 |
6.7%
|
|
| 9 | 13 |
4.6%
|
|
| 10 | Very effective | 10 |
3.5%
|
| 11 | Don't know | 137 |
48.4%
|
| Sysmiss | 20 |