| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.3%
|
| 2 | 1 |
0.4%
|
|
| 3 | 4 |
1.8%
|
|
| 4 | 7 |
3.1%
|
|
| 5 | 16 |
7%
|
|
| 6 | 14 |
6.2%
|
|
| 7 | 19 |
8.4%
|
|
| 8 | 28 |
12.3%
|
|
| 9 | 17 |
7.5%
|
|
| 10 | Very effective | 12 |
5.3%
|
| 11 | Don't know | 106 |
46.7%
|
| Sysmiss | 8 |